New X870E Hero BTF with Astral 5090 OC BTF and poor benchmarks

[AlphaGator]

I just completed a build with a new ROG CROSSHAIR X870E HERO BTF, AMD 9950X3D, and ROG-ASTRAL-RTX5090-O32G-BTF-GAMING. I have a SeaSonic PRIME TX-1600 Noctua Edition 1600W PSU. The 5090 is using the BTF 12v GC-HPWR connector. I also have a ROG RYUJIN III 360 ARGB AIO.

BIOS 1805

I ran 3DMark benchmarks, and the results are disappointing. The Graphics Score is towards the bottom. See below.

RAM = G.Skill Trident Z5 Neo RGB 64 GB (2 x 32 GB) DDR5-6000 CL30

I have only enabled EXPO Profile 1 in the BIOS and have done nothing else.

I have tried different profiles in GPU Tweak III, but nothing can get above 30,000 total score. I am using Tweak v2.0.6.1.

Something must be going on to have results this low with such a high-end motherboard, CPU, and GPU.

Please advise!

[Savagegaz]

I have issue connecting my 5090 astral to crosshairs hero Btf due where place facing are does anyone else have fix around this  as can’t get it to click 

[AlphaGator]

I assume you've removed the covers from the PCIE and power slots? Did you press open the latch? Do you have clearance in your case?

[nemen]

you will need to shunt mod your gpu to get a 55,000 gpu score . there are a few tweaks that can help with your score such as increasing the ram infinity fabric(fclk) to 2133. and a few tweaks to the cpu with pbo . the guys at the middle and top are professional overclockers to be fair

[AlphaGator]

thanks for that info!

the issue I am having is that someone I've been talking to on Discord has the same mobo and same GPU, but has a 7800X3D (I have a 9950X3D) and his graphics score on the same 3DMark benchmark is 47816, whereas mine is 36449. And, he hasn't done anything to his setup (no OCing, etc...just stock OOB).

but I am realizing now he may have had lower resolution display?

i just ran Speed Way and got 15,046, which seems pretty solid.

[AlphaGator]

To close this out, disabling SVM and IOMMU in the BIOS, and also making sure the PCIEX16_Bandwidth Bifurcation is set to PCIe X16 Mode, not "Auto," increased my Time Spy score to 35,000.