Xeon 2640 v4 with Intel Xeon Scalable Processor 7600 and Intel Xeon E5-2600 RX 590 graphics card.
Xeon 2640 v4 with Intel Xeon Scalable Processor 7600 and Intel Xeon E5-2600 RX 590 graphics card.
Issue – Severe frame spikes and irregular frame times on both my RX 590 and 7600. CSGO with very high preset settings: average 125 FPS, CPU usage around 30%, GPU utilization at 80%, smooth frames after 10 minutes of testing. Three spikes were recorded. GPU temperature averaged 55°C, overall gaming experience was decent. Version 24.5.1 Xdefiant with high preset: CPU 60% usage, GPU 80% utilization, performs better with Vsync. Frame times varied a lot. Average FPS dropped to 115. GPU temps stayed at 55°C. Benchmark results were taken using the Xeon 2640 v4 and 7600 configurations. I changed drivers four times for the 590 and two times for the 7600.
First thing. Does your computer suddenly develop the problem and was working ok before ? I think the CPU is the bottleneck in your system. Even if the CPU usage is under 100%, I think the games are using a limited number of cores and that limit the reported usage to a certain percentage. This is a 10 cores CPU. So, 30% usage may represent 3 cores running at 100% and 7 cores at idle. This CPU was certainly powerful when it was introduced onto the market, but it certainly shows its age nowadays. Even a Ryzen 5 5600X scores better in Cinebench (single and multi-core). So, unless the problem is new. I think upgrading the CPU and motherboard may be the only long term solution to your issue. If I were you, I'd keep that system as a workstation with the rx590 and build another computer with a more recent CPU (like a Ryzen 5 7600X) with the rx 7600 GPU.
I also considered it a bottleneck, though the 2640 resembles the Ryzen 3600x CPU. It’s slightly less efficient in single-core tasks, but the main point is that age doesn’t automatically mean it can’t match modern hardware. I’m curious if my motherboard’s PCIe 3.0 slot is limiting a PCIe 4.0 card, which might be causing performance drops and frequent frame drops. I also checked the SSD health and everything seems normal. It could be the power supply that’s the problem—I’ve never heard of a PSU affecting performance this way before, maybe my assumption is incorrect.
PCIe gen 3 x 8 will easily handle the GPU's data rate. This shouldn't be the main concern. Regarding performance, the Xeon achieves 142 (single thread) and 1481 (multi-thread), whereas the 3600X reaches 204 (single thread) and 1640 (multi-thread) in Cinebench R15. Beyond raw speed, there are incremental gains from higher clock speeds, better power use, improved memory support, and other enhancements that together can significantly impact results. I don’t intend to criticize the Xeon—it was a strong CPU back then—but it appears to be reaching its limits. For the PSU, I think frame time spikes are unlikely to stem from it. Good luck!
Turn off HT if it's a CPU with more than 8 cores. Use quad channel memory if available.