2y ago

Running a modern GPU with an old CPU/motherboard?

I have an Intel i7-4770 CPU (from 2013) and I don't think I have ever been CPU-bound so I would rather not spend money on upgrading it. However, I want to upgrade my graphics card to a Radeon RX 7600. My motherboard supports PCIE 3.0 which the RX 7600 is fine with.

Is there anything I should look out for? I'm worried that I'm missing something that will prevent me from running a 2023 video card on hardware ten years older than that.

(In case anyone is curious, my current video card is a GeForce GTX 960. It has been good enough for Diablo 2 Resurrected but I don't think it will be able to handle Baldur's Gate 3.)

12 comments

You are about to be CPU bound. My old 2700k at 4.3-.8 Ghz is sometimes bottle-necked by an rx480 8Gb. I can still use a beefy card in it for compute though. Looks like that card can saturate your PCI bus at 3 - 4x the throughput your CPU can handle. I would consider this if you had a need right now and you are going to upgrade the rest fairly soon.
- What this guy said, welcome to the world of being CPU bound.
  That being said, unless you are going for benchmark scores you most likely won't run into any issues. There are RARE instances that because of the nature of the bottleneck the systems actually operates worse than previously but thus is a vary rare occurrence. You will definitely be not getting the full performance of your GPU though.
  
  If I'm not going to be getting the full performance of that card, should I consider buying an older card instead, if the older card would be just as fast in practice?
  (How can I know the effective performance of a video card on my system?)
You could use that GPU no problem. Not sure about bottlenecks, but it would work.
Hey, my friends just bought a 7600 for our friend who was running the same gen CPU who had a GTX 680ti. The upgrade was so large that any chance of being CPU bound was overridden by how.much more powerful the GPU is. He also had 0 issues upgrading.
The reality is that most games (CS:GO, cities skylines, etc.. excluded) are heavily GPU bound. You will see a huge upgrade, be able to use the AV1 transcoder, AND get another minor upgrade when you upgrade your CPU/Mobo to something with gen4. (There is a 5-10% loss with PCI3.0).
We are trying to see soon if his build can handle Baldur's gate 3 with the 7600. It is around the same as a 5700XT and it works fine with BG3.
I did similar recently. Upgraded from an RX580 to RX6650XT on an i5 9600/PCI3 board. It's definitely an improvement, but not as much as I'd get with a new mainboard+cpu.
You'll likely bottleneck in most games, but it'll work. If you run into stuttering, limit your fps.
As I understand it, the socket on the CPU changes every few years. Intel is on a socket called LGA1700 now which will support 14th gen but after that it will be a different socket. So any motherboard that has LGA1700 can be used for now but later new motherboards will be released for the new socket. Similarly in AMD, the current socket is AM5 which they've said they will support for another year or something, after that the new CPUs will be on a new socket.
The above matters for choosing a motherboard that will be supported later by new CPUs. For GPUs the socket doesn't matter, but the higher the PCIe I suppose that's better.
I'm a beginner at this though, and may be wrong, but you could search more along these lines. Hope this helps!
If you do 1080p gaming you will be bottlenecked https://pc-builds.com/bottleneck-calculator/

12 comments