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I disagree almost wholeheartedly. One of the easiest ways to help cooling is to spread out the heat load, then you need to sink away less thermal power from any
by nick238 3y ago
I disagree almost wholeheartedly. One of the easiest ways to help cooling is to spread out the heat load, then you need to sink away less thermal power from any specific area to keep the max temperature under whatever limit.
The article seems to imply that iGPUs are more efficient. This is kind of true, but mostly because they have to be, because they need to share the capabilities of their cooler. Most CPUs and GPUs nowadays are clocked for max performance, not efficiency. Pulling them back just a little bit from the red-line and their efficiency skyrockets, but does the user want to pay more for less?
The downside of dGPUs nowadays is that the PCIe form factor was not designed for triple+ slot 10 kg AIBs. Jostle an assembled computer with a RTX 4090 in it and you're probably lucky that it doesn't rip the PCIe connector off the motherboard. This could be made into a cooling argument by pointing out that (consumer) cases just blow the heat around, and don't really exhaust it. (GPUs for servers have passive heatsinks that have front-to-back channels that the jet-engine server fans blow straight through).
- brucethemoose2 3y agoYeah GPUs really need a new form factor for desktop. Maybe just the mezzanine cards they already use for server GPUs.
- bonton89 3y agoI'm almost positive some iGPUs were tested and found that when loaded they caused the CPU portion to throttle. Which is logical because the heat is all right there. Generally it wouldn't be a problem as you wouldn't be loading them at the same time but it could come into play in games.
- wmf 3y agoThis is by design; the CPU cores will use any power given up by other parts of the chip.
- dsr_ 3y agoThe right place for gaming and mass-parallel workload GPUs is outside of the case, on a flexible cable carrying 16 channels of PCIe v4 or 5 or whatever and a good ground. Selling the GPU in a case with appropriate power supply and cooling adds relatively little to the cost of a high-end GPU, and the marketing is obviously all about maximum performance unconstrained by your PC's form factor, without having to make any decisions or tradeoffs except money for speed.