Could a separate GPU boost the speed of a CPU that already has built-in graphics?
Could a separate GPU boost the speed of a CPU that already has built-in graphics?
I found a couple of old FirePro V4900 units on the verge of being thrown away, but I chose to keep one. My dad has a rebuilt Dell Optiplex 790 (Core i5-2500, 8GB RAM, SSD+HDD, Ubuntu), and I installed it on an old Cooler Master from around 2013 (likely N300). I added one of the GPUs because that seemed like a smart move. He mainly uses it to stream videos—YouTube, Netflix, Crave, etc.—and I think the GPU could ease some pressure on the CPU over time, extending the machine’s lifespan. I’m now curious if my idea is working.
It could slightly reduce CPU temperatures and offer better performance compared to a weak iGPU in the i5-2500, but it won’t necessarily extend the overall lifespan of the system. CPUs rarely fail, whereas components like the power supply, motherboard, storage, or RAM often are the culprits. This is why older CPUs tend to be inexpensive, while compatible motherboards remain relatively stable. There’s a lot of functional old CPUs available, but not enough compatible boards. I’ve helped with computer refurbishments before, and we often found plenty of usable Core 2 Quad and early Core i chips that couldn’t be used due to limited board options. In short, you probably don’t need to worry about the CPU—it’s likely to last long beyond what it can do.
This outdated GPU probably won’t deliver significant results for your needs. As noted, the CPU isn’t concerned with whether the integrated graphics are present or not. The biggest change you’ll notice is increased RAM availability since the iGPU won’t be using it, though this comes with higher power usage.