Ok, below is information I gathered from running the Firestrike stress test on various configurations. By no means is this exhaustive in any way however as I only ran 8 or 9 tests in full - I've not got a lot of spare time to do this outside of preparing to ship cases. The case was oriented vertically with the mainboard/PSU on top. Below when I reference all 3 chassis fans I men the top two are exhausting and the bottom is configured to intake (unless specified otherwise).
System Configuration:
ASRock B350 Fatal1ty mITX
AMD Ryzen 1800X w/ Cryorig Aluminum C7 (stock fan)
8GB GSkill 3200RGB DDR4 (2x4GB)
Lian-Li 750W SFX-L PSU
Vega 64 LE or R9 290X Lightning GPU
Toshiba 512GB m.2 drive
2 x 60x60x15 Delta PWM fans
1 x 60x60x25 Noctua PWM fan
Vega 64 - Firestrike Stress Test no chassis fans
CPU Max 60.5
GPU Max 83
GPU HBM 88
GPU HostSpot 94
System 53
Vega 64 - Firestrike Stress Test w/ all 3 chassis fans
CPU Max 57.1
GPU Max 82
GPU HBM 87
GPU HostSpot 94
System 53
Vega 64 - Firestrike Ultra Stress Test no chassis fans
CPU Max 55.3
GPU Max 79
GPU HBM 85
GPU HostSpot 92
System 47
Vega 64 - Firestrike Ultra Stress Test w/ all 3 chassis fans
CPU Max 53.9
GPU Max 80
GPU HBM 86
GPU HostSpot 93
System 48
R9 290X Lightning - Firestrike Stress Test no chassis fans
CPU Max 61.8
GPU Max 82
System 52
R9 290X Lightning - Firestrike Stress Test w/ all 3 chassis fans
CPU Max 48
GPU Max 83
System 50
R9 290X Lightning - Firestrike Stress Test w/ all 3 chassis fans in performance mode (full speed)
CPU Max 53.6
GPU Max 82
System 45
R9 290X Lightning - Firestrike Stress Test w/ all 3 chassis fans, GPU fan directed as exhaust
CPU Max 46
GPU Max 80
System 50
System Configuration:
ASRock B350 Fatal1ty mITX
AMD Ryzen 1800X w/ Cryorig Aluminum C7 (stock fan)
8GB GSkill 3200RGB DDR4 (2x4GB)
Lian-Li 750W SFX-L PSU
Vega 64 LE or R9 290X Lightning GPU
Toshiba 512GB m.2 drive
2 x 60x60x15 Delta PWM fans
1 x 60x60x25 Noctua PWM fan
Vega 64 - Firestrike Stress Test no chassis fans
CPU Max 60.5
GPU Max 83
GPU HBM 88
GPU HostSpot 94
System 53
Vega 64 - Firestrike Stress Test w/ all 3 chassis fans
CPU Max 57.1
GPU Max 82
GPU HBM 87
GPU HostSpot 94
System 53
Vega 64 - Firestrike Ultra Stress Test no chassis fans
CPU Max 55.3
GPU Max 79
GPU HBM 85
GPU HostSpot 92
System 47
Vega 64 - Firestrike Ultra Stress Test w/ all 3 chassis fans
CPU Max 53.9
GPU Max 80
GPU HBM 86
GPU HostSpot 93
System 48
R9 290X Lightning - Firestrike Stress Test no chassis fans
CPU Max 61.8
GPU Max 82
System 52
R9 290X Lightning - Firestrike Stress Test w/ all 3 chassis fans
CPU Max 48
GPU Max 83
System 50
R9 290X Lightning - Firestrike Stress Test w/ all 3 chassis fans in performance mode (full speed)
CPU Max 53.6
GPU Max 82
System 45
R9 290X Lightning - Firestrike Stress Test w/ all 3 chassis fans, GPU fan directed as exhaust
CPU Max 46
GPU Max 80
System 50