I'm planning to build or buy a gaming PC in the United States for around $1,500. I've been using a GTX 1080 Ti for about four years and want a major upgrade for Rust, Rainbow Six Siege, Overwatch 2, Apex Legends, Arma, Dota, and Valorant. Rust is my main concern because it relies heavily on CPU performance, and I'm hoping for roughly 140–250 FPS at 1080p. I already have all my peripherals and need a case, but appearance is not especially important. I may sell my current PC for about $400, which would give me more room in the budget.
I'm currently considering these parts:
- CPU: Ryzen 7 7800X3D — $350
- CPU cooler: Thermalright Peerless Assassin 120 SE — $35
- Motherboard: ASRock B650M Pro RS WiFi — $120
- RAM: 32GB DDR5-6000 CL36 — $290 from eBay
- GPU: Used RTX 3080 Founders Edition 10GB — $390 from eBay
- SSD: 1TB PCIe 4.0 NVMe drive — $170
- Power supply: Corsair RM750e ATX 3.1, 750W — $90
- Case: Aerocool P300C — $60
- RGB controller and cables — $20
The total is slightly over $1,500. Are there any compatibility, reliability, or value concerns, and would you recommend changing any of these parts?
2 Answers
The overall platform makes sense, but several prices need another look. $290 for 32GB of DDR5-6000 is extremely high, and $170 for a 1TB SSD is also far more than necessary. You can usually find a 32GB DDR5-6000 CL30 or CL32 kit and a good 1TB PCIe 4.0 drive for much less, leaving more money for the graphics card. The 7800X3D is a strong choice for Rust, and the Peerless Assassin you listed is already an appropriate cooler.
The used RTX 3080 can still perform well at 1080p, but check its condition, temperatures, and whether the seller offers any return protection. It also uses considerable power, so the 750W Corsair unit should be fine as long as it is genuine and properly connected. I wouldn’t avoid ASRock automatically; that board can be perfectly usable, but check its BIOS version, VRM reviews, and memory support before buying.
For this budget, I’d compare the used 3080 against newer cards such as an RX 7800 XT or RTX 4070 if prices are close. A newer card may use less power and include a warranty, while the 3080 still has good raw performance. Also make sure the case has enough airflow and GPU clearance; a cheap case with restricted front panels can hurt temperatures. The motherboard is not automatically dangerous to an X3D processor, but update the BIOS and use a reasonable memory profile such as EXPO rather than manually pushing voltages.
I’ll compare newer GPU options and make sure the case has decent airflow before ordering.

Thanks, that helps. I’ll shop around for cheaper RAM and storage instead of spending so much on those parts.