NCASE M1 V6 GPU Compatibility List

TheKneebler

Case Bender
New User
Nov 25, 2020
2
1
This is not an exhaustive list, focused primarily on current gen top-tier cards (as these tend to be the largest). Downrange models often share designs with higher end models, so this should still be useful for determining compatibility with many of those cards. Note that until verified by users, compatibility is a best guess based on published specs and product photos, and will tend to be conservative.

Generally speaking, nvidia and AMD reference/Founder's Edition cards will always fit.

____________________________



GPU compatibility (M1 V6)


Graphics Card Support

Maximum length​
  • 322mm (cards up to 45mm (2.2 slots) thick)
  • 280mm (cards up to 60mm (3 slots) thick)
  • 300mm (cards up to 60mm (3 slots) thick with front I/O ports removed)
Maximum height (AKA width)​
  • 140mm at mid-card
  • 130mm (first 5mm at back corner)
  • 125mm (portion of card over 280mm long)
  • Please allow 15-20mm for PCIe power connectors
Bottom fan support​
  • 25mm thick fans: 2-slot (<42mm) cards only
  • 15mm thick fans: up to 2.5-slot (<50mm) cards
GPU support bracket​
  • 2 to 2.5 slot (<42mm-50mm) cards only




Detailed length/height diagram:



Please note this shows the maximum internal dimensions and does not account for card installation.

Example of a reference height card (PCB/cooler =~111mm tall) - no recessed connectors:




Example of a tall card (PCB and/or cooler over 111mm tall) - no recessed connectors; height added by PCIe power connectors can prevent installation in narrower cases:




Example of a tall card with recessed PCIe power connectors - reduced overall height may allow installation in more cases:


____________________________

Where low profile PCIe power adapters are indicated for fitment, ModDIY connectors are suggested.

____________________________



AMD Card Compatibility List

ManufacturerModelLengthHeightThickness (slots)NotesCompatible?Fitment Notes
AMD referenceRX 6900/6800 XT267120~50YesMight need low profile PCIe power adapters
AMD referenceRX 680026712040YesMight need low profile PCIe power adapters
PowerColorRed Devil 6800 XT/680032013562No
PowerColorRed Dragon 6800 XT/680031013554No
SapphireNitro+ RX 6800 XT/XT SE310134.355.3No
SapphireNitro+ RX 6800310.5134.255.2No
SapphirePulse RX 6800 XT313134.853.4No
SapphirePulse RX 6800303127.353.8No

* Front I/O ports must be removed
§ Low profile PCIe power adapters must be used
† Installation may be difficult
ManufacturerModelLengthHeightThickness (slots)NotesCompatible?Fitment Notes
ASRockRadeon RX 5700 XT Challenger D 8G OC?12142Yes
ASRockRadeon RX 5700 XT Taichi X 8G OC+31113053Recessed power connectorsNo
ASRockRadeon RX 5700 XT 8G (AMD Reference)27011142Yes
ASRockRadeon RX 5700 Challenger D 8G OC?12142Yes
ASRockRadeon RX 5700 8G (AMD Reference)27011142Yes
ASRockPhantom Gaming X Radeon VII 16G (AMD Reference)26712140Yes
ASUSTUF Gaming X3 Radeon RX 5700 XT OC edition26912554Yes
ASUSROG Strix Radeon RX 5700 XT OC edition30513054Recessed power connectorsYes*†Confirmed by user
ASUSAMD Radeon RX 5700 XT (AMD Reference)27011140Yes
ASUSTUF Gaming X3 Radeon RX 5700 OC edition26912554Yes
ASUSROG Strix Radeon RX 5700 OC edition30513054Recessed power connectorsYes*†
ASUSAMD Radeon RX 5700 (AMD Reference)27011135Yes
ASUSRadeon VII (AMD Reference)26712140Yes
GigabyteRX 5700 XT GAMING OC 8G280114.349.6Yes
GigabyteAORUS Radeon RX 5700 XT 8G29012358Yes*†
GigabyteRX 5700 GAMING OC 8G280114.349.6Yes
HISRadeon RX 5700 XT (AMD Reference)27211136Yes
HISRadeon RX 5700 (AMD Reference)26811136Yes
HISRadeon VII (AMD Reference)26812042Yes
MSIRadeon RX 5700 XT GAMING29714058No
MSIRadeon RX 5700 XT GAMING X29714058No
MSIRX 5700 XT MECH OC23212646Recessed power connectorsYes
MSIRX 5700 XT EVOKE OC25412951Recessed power connectorsYes
MSIRadeon RX 5700 XT 8G (AMD Reference)27011040Yes
MSIRadeon RX 5700 GAMING29714058No
MSIRadeon RX 5700 GAMING X29714058No
MSIRX 5700 MECH OC23212646Recessed power connectorsYes
MSIRX 5700 EVOKE OC25412951Recessed power connectorsYes
MSIRadeon RX 5700 8G (AMD Reference)27011040Yes
MSIRadeon VII 16G (AMD Reference)26712140Yes
PowerColorRed Devil Radeon RX 5700 XT30013253Yes*§†Confirmed by user
PowerColorRed Dragon Radeon RX 5700 XT24013241Yes§
PowerColorRadeon RX 5700 XT23011141Yes
PowerColorRadeon RX 5700 XT 8GB DDR6 (AMD Reference)27011140Yes
PowerColorRed Devil Radeon RX 570030013253Yes*§†
PowerColorRed Dragon Radeon RX 570024013241Yes§Confirmed by user
PowerColorRadeon RX 570023011141Yes
PowerColorRadeon RX 5700 8GB DDR6 (AMD Reference)27011140Yes
PowerColorRadeon VII (AMD Reference)28012540Yes
SapphireRadeon RX 5700 XT (AMD Reference)27211136Yes
SapphireNITRO+ RX 5700 XT 8G30613549Recessed power connectorsYesConfirmed by user; sits at slight upward angle due to front I/O
SapphirePulse RX 5700 XT25413546.5Recessed power connectorsYes
SapphireRadeon RX 5700 (AMD Reference)26811136Yes
SapphirePulse RX 570025413546.5Recessed power connectorsYesConfirmed by user
SapphireRadeon VII (AMD Reference)26812042Yes
XFXRadeon RX 5700 XT RAW II27814058Recessed power connectorsYesConfirmed by user
XFXRadeon RX 5700 XT Triple Dissipation~315~13344Recessed power connectors
Possibly sold as THICC III Ultra
YesConfirmed by user
XFXRadeon RX 5700 XT THICC II (incl. Pro/Ultra)29313055Recessed power connectorsYes*†
XFXRadeon RX 5700 XT THICC III (incl. Ultra)31513157Recessed power connectors
Original 3-slot model per XFX website; retail model may have been replaced by the 2-slot Triple Dissipation design
No
XFXRadeon RX 5700 XT (AMD Reference)26711140Yes
XFXRadeon RX 5700 (AMD Reference)26711140Yes
XFXRadeon VII (AMD Reference)28012540Yes

* Front I/O ports must be removed
§ Low profile PCIe power adapters must be used
† Installation may be difficult

Nvidia Card Compatibility List
ManufacturerModelLengthHeightThickness (slots)NotesCompatible?Fitment Notes
NvidiaFounder's Edition RTX 30903131383-slotNo
NvidiaFounder's Edition RTX 30802851122-slotYesConfirmed by user
NvidiaFounder's Edition RTX 30702421122-slotYes
ASUSROG STRIX RTX 3090/3080/3070318.5140.157.8No
ASUSTUF RTX 3090/3080299.9126.951.7Yes*§†
ASUSDUAL RTX 3070 8G26713552Yes§Confirmed by user
EVGAXC3285.37111.152.2-slotYesConfirmed by user
EVGAFTW3300136.752.75-slotYes*§†Confirmed by user
GainwardRTX 3090/3080 Phoenix/Phoenix GS2941122.7-slotYes*†
GalaxRTX 3090/3080 SG31711361No
GalaxRTX 3070 SG317113~2.5 slotYesConfirmed by user
GalaxRTX 3090/3080/3070 EX Gamer31612458No
GalaxRTX 3070 EX28512458Yes§
GigabyteAORUS RTX 3090/3080 XtremeNo
GigabyteAORUS RTX 3090/3080 Master31914070No
GigabyteRTX 3090/3080 Gaming OC32012955No
GigabyteRTX 3090/3080 Eagle OC32012856No
GigabyteRTX 3070 Eagle28211541YesConfirmed by user
GigabyteRTX 3090/3080 Vision32012655No
GigabyteRTX 3070 Vision28611551Yes
MSIRTX 3090 Gaming Trio/Gaming X Trio33514056No
MSIRTX 3080 Gaming Trio/Gaming X Trio32314056No
MSIRTX 3090/3080 Ventus 3X30512057Yes*†Confirmed by user
MSIRTX 3070 Ventus 3X30512152Yes*†
MSIRTX 3070 Ventus 2X23212452Yes
PalitRTX 3090/3080/3070 GamingPro29411260Yes*†
PNYRTX 3090/3080/3070 XLR8 Gaming EPIC-X RGB Triple Fan29411259Yes*†
ZotacRTX 3080 AMP Holo317.8131.859.6YesConfirmed by user
ZotacRTX 3090 Trinity317.8120.758Yes*†Confirmed by user
ZotacRTX 3080 Trinity317.8120.758No
Zotac3070 Twin Edge231.9141.341.5YesConfirmed by user

* Front I/O ports must be removed
§ Low profile PCIe power adapters must be used
† Installation may be difficult
ManufacturerModelLengthHeightThickness (slots)NotesCompatible?Fitment Notes
ASUSDual GeForce RTX 2080 Ti26811458Yes
ASUSDual GeForce RTX 2080 Ti OC edition26811458Yes
ASUSTurbo GeForce RTX 2080 Ti26911442Yes
ASUSROG Strix GeForce RTX 2080 Ti304.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce RTX 2080 Ti Advanced edition304.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce RTX 2080 Ti OC edition304.7130.454.1Recessed power connectorsYesConfirmed by user
ASUSROG Matrix GeForce RTX 2080 Ti31013559.6Recessed power connectorsNo
ASUSDual GeForce® RTX 2080 SUPER EVO26711856Yes
ASUSDual GeForce® RTX 2080 SUPER EVO OC edition26711856Yes
ASUSROG Strix GeForce® RTX 2080 SUPER299.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce® RTX 2080 SUPER Advanced edition299.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce® RTX 2080 SUPER OC edition299.7130.454.1Recessed power connectorsYes
ASUSDual GeForce RTX 208026811458Yes
ASUSDual GeForce RTX 2080 Advanced edition26811458Yes
ASUSDual GeForce RTX 2080 OC edition26811458Yes
ASUSTurbo GeForce RTX 2080 Evo268111.340Yes
ASUSROG Strix GeForce® RTX 2080299.7130.454.1Recessed power connectorsYesConfirmed by user
ASUSROG Strix GeForce® RTX 2080 Advanced edition299.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce® RTX 2080 OC edition299.7130.454.1Recessed power connectorsYes
ASUSDual GeForce® RTX 2070 SUPER EVO26711858Yes
ASUSDual GeForce® RTX 2070 SUPER EVO Advanced edition26711858Yes
ASUSDual GeForce® RTX 2070 SUPER EVO OC edition26711858Yes
ASUSTurbo GeForce® RTX 2070 SUPER EVO268111.340Yes
ASUSROG Strix GeForce® RTX 2070 SUPER299.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce® RTX 2070 SUPER Advanced edition299.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce® RTX 2070 SUPER OC edition299.7130.454.1Recessed power connectorsYes
ASUSROG Strix GeForce® RTX 2070300.5130.648.9Recessed power connectorsYesConfirmed by user
ASUSROG Strix GeForce® RTX 2070 Advanced edition300.5130.648.9Recessed power connectorsYes
ASUSROG Strix GeForce® RTX 2070 OC edition300.5130.648.9Recessed power connectorsYes
EVGAGeForce RTX 2080 Ti XC GAMING27011140Yes
EVGAGeForce RTX 2080 Ti XC ULTRA GAMING27011154Yes
EVGAGeForce RTX 2080 Ti XC2 ULTRA GAMING27011154Yes
EVGAGeForce RTX 2080 Ti BLACK EDITION GAMING27011140Yes
EVGAGeForce RTX 2080 Ti GAMING26511140Yes
EVGAGeForce RTX 2080 Ti XC HYBRID GAMING26611440Attached 120mm AIOYes
EVGAGeForce RTX 2080 Ti FTW3 GAMING30213954No
EVGAGeForce RTX 2080 Ti FTW3 ULTRA GAMING30213954No
EVGAGeForce RTX 2080 TI FTW3 ULTRA HYBRID GAMING29113940Attached 120mm AIONo
EVGAGeForce RTX 2080 Ti FTW3 ULTRA HYDRO COPPER GAMING291158.540WaterblockNo
EVGAGeForce RTX 2080 Ti K|NGP|N GAMING29113940Attached 240mm AIONo
EVGAGeForce RTX 2080 SUPER XC GAMING27011140Yes
EVGAGeForce RTX 2080 SUPER XC ULTRA GAMING27011154Yes
EVGAGeForce RTX 2080 SUPER XC2 ULTRA GAMING27011154Yes
EVGAGeForce RTX 2080 SUPER XC HYBRID GAMING26611440Attached 120mm AIOYes
EVGAGeForce RTX 2080 SUPER BLACK GAMING27011140Yes
EVGAGeForce RTX 2080 SUPER GAMING27011140Yes
EVGAGeForce RTX 2080 SUPER FTW3 ULTRA GAMING30213954No
EVGAGeForce RTX 2080 SUPER FTW3 HYBRID GAMING29113940Attached 120mm AIONo
EVGAGeForce RTX 2080 SUPER FTW3 HYDRO COPPER GAMING291158.540WaterblockNo
GainwardGeForce RTX 2080 Ti Phoenix29211250No*
GainwardGeForce RTX 2080 Ti Phoenix GS29211250No*
GainwardGeForce RTX 2080 SUPER Phantom29213054No
GainwardGeForce RTX 2080 SUPER Phantom GLH29213054No
GalaxGeForce® RTX 2080Ti SG Edition30811147No
GalaxGeForce® RTX 2080Ti HOF33014557No
GalaxGeForce® RTX 2080Ti HOF 10th Anniversary Edition32016558No
GigabyteGeForce RTX 2080 Ti GAMING OC 11G286.5114.550Yes
GigabyteGeForce RTX 2080 Ti WINDFORCE 11G280.4116.540Yes
GigabyteGeForce RTX 2080 Ti WINDFORCE OC 11G280.4116.540Yes
GigabyteGeForce RTX 2080 Ti TURBO 11G267113.735Yes
GigabyteGeForce RTX 2080 Ti TURBO OC 11G267113.735Yes
GigabyteAORUS GeForce RTX 2080 Ti TURBO 11G271112.536Yes
GigabyteAORUS GeForce RTX 2080 Ti 11G290134.360YesConfirmed by user
GigabyteAORUS GeForce RTX 2080 Ti XTREME 11G290134.360YesConfirmed by user
GigabyteAORUS GeForce RTX 2080 Ti XTREME WATERFORCE 11G29013140Attached 240mm AIONo
GigabyteAORUS GeForce RTX 2080 Ti XTREME WATERFORCE WB 11G291.315928.7WaterblockNo
MSIGeForce RTX 2080 Ti VENTUS GP26811250Yes
MSIGeForce RTX 2080 Ti VENTUS 11G26811250Yes
MSIGeForce RTX 2080 Ti VENTUS 11G OC26811250Yes
MSIGeForce RTX 2080 Ti VENTUS 11G OCV126811250Yes
MSIGeForce RTX 2080 Ti SEA HAWK X26811441Attached 120mm AIOYes
MSIGeForce RTX 2080 Ti LIGHTNING32814363No
MSIGeForce RTX 2080 Ti LIGHTNING Z32814363No
MSIGeForce RTX 2080 Ti GAMING TRIO32714056.5No
MSIGeForce RTX 2080 Ti DUKE 11G31412050No
MSIGeForce RTX 2080 Ti DUKE 11G OC31412050No
MSIGeForce RTX 2080 Ti SEA HAWK EK305169.341.5WaterblockNo
MSIGeForce RTX 2080 Ti SEA HAWK EK X305169.341.5WaterblockNo
MSIGeForce RTX 2080 SUPER VENTUS26811450Yes
MSIGeForce RTX 2080 SUPER VENTUS OC26811450Yes
MSIGeForce RTX 2080 SUPER AERO26511440Yes
MSIGeForce RTX 2080 SUPER GAMING TRIO32814056.5No
MSIGeForce RTX 2080 SUPER GAMING X TRIO32814056.5No
PalitGeForce RTX 2080 Ti GamingPro29211258No*
PalitGeForce RTX 2080 Ti GamingPro OC29211258No*
PalitGeForce RTX 2080 Ti Dual29211258No*
PalitGeForce® RTX 2080 SUPER GR29213059.6No
PalitGeForce® RTX 2080 SUPER GRP29213059.6No
PNYGeForce RTX 2080 Ti 11GB XLR8 Gaming Overclocked Edition30211438Yes
PNYGeForce RTX 2080 Ti 11GB Blower26711438Yes
ZotacGeForce RTX 2080 Ti Twin Fan26811338Yes
ZotacGeForce RTX 2080 Ti Blower26811338Yes
ZotacGeForce RTX 2080 Ti Triple Fan30811357No
ZotacGeForce RTX 2080 Ti AMP MAXX29813342No
ZotacGeForce RTX 2080 Ti AMP30811357No
ZotacGeForce RTX 2080 Ti AMP Extreme32413659No
ZotacGeForce RTX 2080 Ti AMP Extreme Core32413659No
ZotacGeForce RTX 2080 Ti ArcticStorm29515830WaterblockNo

* Front I/O ports must be removed
§ Low profile PCIe power adapters must be used
† Installation may be difficult
If the Zotac 3090 Trinity fits then wouldn't the 3080 Trinity?
 

Necere

Shrink Ray Wielder
Original poster
NCASE
Feb 22, 2015
1,720
3,284
@Necere I would really love to see an aditional colum in the compatibility table for "fits deshrouded" - with 15mm or with 25mm fans underneath.

Since deshrouding is one of the greatest things to do with our NCase.
That's hard to track since I have to depend entirely on user reports. Right now I couldn't tell you offhand a single card that I know fits deshrouded.
 

Necere

Shrink Ray Wielder
Original poster
NCASE
Feb 22, 2015
1,720
3,284

Boutchoo

What's an ITX?
New User
Dec 11, 2020
1
1
Long time lurker, since the V5 !

So, from what I've gathered here, if I want the Asus TUF OC, I would likely have to deshroud the GPU since I already have 2x A12x15 feeding air from the bottom.

As seen here, with shroud it's a tight fit !

But Deshrouded, it fits well even with 2x A12x25

Now, I would have to order 2x 8-Pin Type-B 180 degree connector to be able to close the side panel flush (no bulge).

Did I miss any steps ? Remove the Front connector to fit the card maybe?

What do you guys think?

Thanks <3
 
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r3fl3x

Minimal Tinkerer
New User
Nov 9, 2020
3
7
Palit Rtx 3080 Gamingpro OC fits easily and perfectly with slight adjustment in V5. I just cut the corner of the front usb plastic and removed the audio ports since I'm not using them. Also I think this is a good candidate for deshroud but there is 2 warranty stickers. Probably I'm not gonna bother with it unless the noise gets me at some point.

 

clarky75

What's an ITX?
New User
Dec 13, 2020
1
1
Palit Rtx 3080 Gamingpro OC fits easily and perfectly with slight adjustment in V5. I just cut the corner of the front usb plastic and removed the audio ports since I'm not using them. Also I think this is a good candidate for deshroud but there is 2 warranty stickers. Probably I'm not gonna bother with it unless the noise gets me at some point.


Hey there, long time lurker in this thread. I have the same, I had no trouble fitting this card without cutting anything on the front I/O, audio included in the V6. Perfect fit. Can't post pictures just now as im away until the new year
 
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wzhalex

Trash Compacter
Jul 22, 2020
49
12
Does Corsair Commander Pro fit in the ODD slot? Any other suggestion on a fan controller that fits in the ODD slot? Thanks!
 

BeerNsoup

Cable-Tie Ninja
Mar 12, 2017
205
149
Does Corsair Commander Pro fit in the ODD slot? Any other suggestion on a fan controller that fits in the ODD slot? Thanks!
Not sure this is related to gpu compatability... but why not just get a splitter cable/cables and run your fans off your mobo? You can run multiple fans per header. It'd be cheaper and easier, plus you can only fit so many fans in an ncase.
 

ghenry22

Efficiency Noob
Dec 3, 2020
5
9
Long time lurker, since the V5 !

So, from what I've gathered here, if I want the Asus TUF OC, I would likely have to deshroud the GPU since I already have 2x A12x15 feeding air from the bottom.

As seen here, with shroud it's a tight fit !

But Deshrouded, it fits well even with 2x A12x25

Now, I would have to order 2x 8-Pin Type-B 180 degree connector to be able to close the side panel flush (no bulge).

Did I miss any steps ? Remove the Front connector to fit the card maybe?

What do you guys think?

Thanks <3

I would just remove the 2x 25 fans and let the 3x fans on the GPU do their thing. This is what I ended up with and it works well and no need to worry about any warranty issues.

The card fits perfectly without the bottom case fans and was a very easy install for me, no issue at all. You definitely do need the 180 degree adapters or the case simply will not close. At least mine wont!
 
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Reactions: Boutchoo

kruznix

Case Bender
New User
Dec 14, 2020
2
0
Hi guys,

Uber noob in the SFF but has been inspired watching Optimum Tech to build with the ncase M1 - so I went ahead and bought this amazing looking case.
However I've only managed to snag myself a Zotac 3080 Trinity, which to my dismay, is listed as NOT compatible with this case.
But my question then becomes, how come the Zotact 3090 Trinity is listed as YES (difficult, but still yes), when they both have the same dimension?

Thanks again for your help!
 

Necere

Shrink Ray Wielder
Original poster
NCASE
Feb 22, 2015
1,720
3,284
Hi guys,

Uber noob in the SFF but has been inspired watching Optimum Tech to build with the ncase M1 - so I went ahead and bought this amazing looking case.
However I've only managed to snag myself a Zotac 3080 Trinity, which to my dismay, is listed as NOT compatible with this case.
But my question then becomes, how come the Zotact 3090 Trinity is listed as YES (difficult, but still yes), when they both have the same dimension?

Thanks again for your help!
See the discussion of the 3080 vs. 3090 Trinity starting on this page (and continuing to the next). For whatever reason the 3080 doesn't seem to fit while the 3090 does.
 

kotchi

Efficiency Noob
Dec 14, 2020
6
1
Hi guys,

Long time lurker, first time poster! I finally pulled the trigger on the NCase M1 and am in the process of slowly collecting each of the components (Australia is really struggling with stock for everything at present).

I just wanted to confirm my understanding that the stock 3070 Gigabyte Gaming OC / Vision cards at 51mm thick would prevent me from having any fans under the GPU (as under 'Bottom fan support' it says "15mm thick fans: up to 2.5-slot (<50mm) cards").

With low sound levels being high priority for me, would you guys suggest letting the stock GPU fans do their own thing without any bottom fan support, or get a card that would allow 15/25mm fans to be installed under the GPU?

Thanks
 

Necere

Shrink Ray Wielder
Original poster
NCASE
Feb 22, 2015
1,720
3,284
Hi guys,

Long time lurker, first time poster! I finally pulled the trigger on the NCase M1 and am in the process of slowly collecting each of the components (Australia is really struggling with stock for everything at present).

I just wanted to confirm my understanding that the stock 3070 Gigabyte Gaming OC / Vision cards at 51mm thick would prevent me from having any fans under the GPU (as under 'Bottom fan support' it says "15mm thick fans: up to 2.5-slot (<50mm) cards").

With low sound levels being high priority for me, would you guys suggest letting the stock GPU fans do their own thing without any bottom fan support, or get a card that would allow 15/25mm fans to be installed under the GPU?

Thanks
They might fit, but I would recommend against it anyway. Having fans right on top of eachother creates turbulence, which increases noise.
 

yimingwuzere

Caliper Novice
Dec 2, 2020
28
3
Hi guys,

Uber noob in the SFF but has been inspired watching Optimum Tech to build with the ncase M1 - so I went ahead and bought this amazing looking case.
However I've only managed to snag myself a Zotac 3080 Trinity, which to my dismay, is listed as NOT compatible with this case.
But my question then becomes, how come the Zotact 3090 Trinity is listed as YES (difficult, but still yes), when they both have the same dimension?

Thanks again for your help!
User reports are mixed on this, but IMHO, all the released Zotac 3080/3090 cards will fit the v6 Ncase - but with reverse sag. The 3080 Trinity user considers reverse sag to be incompatible (as I do), but the guys who fitted in the 3080 Holo and 3090 Trinity do not seem to think so.
If you don't want to deshroud the Zotac cards and want to avoid reverse sag, you will need to grind off part of the middle section on the I/O bracket somehow, per pic 4 in Bindi's post that Necere linked. I personally think these cards are better deshrouded - while Zotac did a fine job adding thermal pads to the backplate to reduce VRAM temps, the shroud for the fans will create a rather audible turbulence past 70% fan speed.