Question Low 3DMark Timespsy / Blender Benchmark scores with 4090 GPU ?

[DeNachtwacht]

Hi, question about a second-hand 4090 Founder's Edition I bought. It's looking good on the outside, no dust etc, but benchmark results are strangely low. I'm wondering what's wrong.

Mainboard: Gigabyte Aorus Elite X570 latest F40d firmware (has PCI-e 4.0 16x support) System: AMD R9 5950X, 64GB DDR4-3200, with Precision Boost Overdrive and Extreme Memory Profile (XMP) enabled in Bios

Software: Windows 11 fully updated and quite a recent fresh system install (2 months old), Founders Edition 4090 firmware also updated,
Blender 4.3

I used 3DMark Timespy Extreme numerous times, and also Blender Benchmark for seperate GPU and CPU reviews. At stock speeds (using 450 Watt while testing) Timespy Extreme 15.5333 (18.326 GPU, 8336 CPU) Blender Benchmark 8500 GPU. (high end 4080 Supers get scores around 8500, the median 4090 score is around 10.900..?)

Using MSI Afterburner and enabling XMP and PBO in the Bios, i managed to tune things up a bit. Afterburner settings: no undervolts, 80% Power Limit, +175 core clock, +1700 memory clock Results now -> power usage 360Watt max. Blender Benchmark GPU: 9500 (better, but still well below average) Blender Benchmark CPU: 387 (15 point above median score) Timespy Extreme: 16424, CPU 9948 and GPU 18557

Compared to other Timespy Extreme 4090 PCs with a R9 5950X gpu, my GPU is in the bottom 17%.

I'm satisfied with average results but this just seems really low. Someone spoke about damaged cuda cores, is that possible? The system works totally fine, no hickups whatso-ever. Temperatures all look normal, the system works flawlessly without any strange behavior. Any advice? Thanks in advance!

 

[Ralston18]

Regarding:

"The system works totally fine, no hickups whatso-ever. Temperatures all look normal, the system works flawlessly without any strange behavior. Any advice?"

Advice:

Leave it all alone. AKA "If it ain't broke, don't fix it".