Memory Help me understand my ram speed

O_and_N

Average Stuffer
Original poster
Aug 18, 2016
77
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I just got a 4x16gb corsair kit CMK64GX4M4B3200C16 pared with a 7960x

In my asrock x299 bios i just entered the OC section and selected from the ram speeds the option 3000mhz(as the defaut was 2133)

In windows task manager it does say speed 3000mhz and after reboot the bios shows 3000mhz too, but than i decided to run firestrike a few times and had activated in the background HWiNFO64 and in the section ''memory timings'' i saw that the current memory clock was 1500 and max it got was 1600 and something?
Memory clock ratio 30.00 x
and everything was at 21 21 21 50

Does this means that the ram is working as it shoud at the selected 3000 or not?Never managed to understand fully HWiNFO indications.
 

thewizzard1

Airflow Optimizer
Jan 27, 2017
333
248
Update your HWiNFO and double-check with CPU-ID. One might be wrong. Also the BIOS can occasionally mis-report memory speed and timings.
 
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brt02

Cable-Tie Ninja
Jan 3, 2018
224
234
That sounds right. 1500 x 2 = 3000 MHz for DDR RAM.

Easiest thing to do would be to enable XMP in your BIOS as your memory is capable of more than what you have at the moment. Don't have the motherboard, so can't tell you exactly where to find the option, maybe the manual might help you there.
 
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Phuncz

Lord of the Boards
SFFn Staff
May 9, 2015
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To add to this:
"DDR4-3200" is a rating/spec measured at 'million transfers per second', so MegaTransfers/sec or MT/s. It is not MHz, DDR4-3200 runs at 1600MHz. DDR RAM does two transfers per clock tick.
 
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O_and_N

Average Stuffer
Original poster
Aug 18, 2016
77
18
In that case, that 1500 does indicate that is at 3000 as brt02 said.Thank you guys.I learned something new.
By the way, i did tried to enable it at 3200 but firestrike kept crashing so that is why i left it at 3000, as i needed the stability for my gamedev workstation.
Either way, i supose that this is still good speed for 64gb ram?
 
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Phuncz

Lord of the Boards
SFFn Staff
May 9, 2015
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You should be able to load the XMP profile for DDR4-3200 and it should work. Sometimes you also need to choose the correct DDR4 spec after enabling the XMP profile, like "DDR4-3200".
It should automatically set the correct memory timings (primary: 16-18-18-36) and settings according to Corsair's specs.
 
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O_and_N

Average Stuffer
Original poster
Aug 18, 2016
77
18
Well, in that case i will try one more time.What also kept me back was because it looks like these ram dont have a temperature detector according to HWiNFO64 and i have no idea if they will surpass some limit.
 

O_and_N

Average Stuffer
Original poster
Aug 18, 2016
77
18
You should be able to load the XMP profile for DDR4-3200 and it should work. Sometimes you also need to choose the correct DDR4 spec after enabling the XMP profile, like "DDR4-3200".
It should automatically set the correct memory timings (primary: 16-18-18-36) and settings according to Corsair's specs.
Just did the xmp and manual 3200 and it now behaves as it shoud.
From 21 21 21 50 which was 3000 it now sits at 16 -18-18-36 3200 as advertised.And i was correct. There is no temperature sensor on the ram.
I did got some type of a fan with bracket for the ram but it cant fit because of the nh-d15.
Since there is no temperature sensor on the ram, do you think it will run hot/overheating if left at the factory xmp?

Cheers guys
 
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Phuncz

Lord of the Boards
SFFn Staff
May 9, 2015
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Great to hear you got it working !
You don't need to have a fan on the memory unless you're going way over 1.35V according to the spec.
 
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Legion

Airflow Optimizer
Nov 22, 2017
357
386
Since there is no temperature sensor on the ram, do you think it will run hot/overheating if left at the factory xmp?

DDR4 barely gets warm even when heavily overclocked with no heatspreaders on it!
Don't worry about trying to get a fan near it, it's not going to overheat.
 
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O_and_N

Average Stuffer
Original poster
Aug 18, 2016
77
18
Well, that raps it up guys.Learned quite a few things.Thank you so much.Looks like i got lucky with the 64gb kit.It works at advertised xmp and the price I think was right (570 euro) in compare to what other kits go for on amazon here in Spain.
 
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