Reply 22260 of 22779, by 386SX
BitWrangler wrote on 2022-07-23, 20:47:386SX wrote on 2022-07-22, 17:39:
Today I rebuilt an everyday home/office machine with a Core2 Quad Q8200, 8GB DDR3@1333, G41, USB3.0 PCI-EX1, SSD SATA2, linux. I am not sure if it's better this low end Quad cpu or the E8600 at 3,33Ghz I used when I need a faster but old config. I imagine the more cores doesn't make much difference compared to such faster dual core.
I was just browsing some quad reviews, it was seeming like about 2.66 in a quad was equal 3.0 Ghz dual in about 80% of the stuff, with the quad running away only in fully multithreaded multicore aware applications. However, you can play with core affinity per app, so you can basically give a couple of tasks core 3 or core 4 all to themselves, given the first two might be more likely to be assigned by OS.
Thanks. Testing this Q8200 I didn't remember it also had less L2 cache memory (4MB total shared by all cores) which make it an interesting entry level quad core cpu far from that +1Ghz with 6MB L2 cache of the E8600. It seems like it should be like 30% slower in single and dual core benchmarks but up to 50% faster in quad core usage situations. But even real time encoding apps when forcing all the cpu core usage seems like not always using them all, even with many threads running for the same application sometimes using like 50% of all the cores not 100%. I suppose it's an interesting choice probably difficult to compare.
Meanwhile I'm trying on it a PCI-EX video card cause the G41 while still supported in linux and running enough well generally, using the system memory seems to limit the average speed while I suppose using any supported video card let the dual channel DDR3 memory to be used only by the cpu. The only faster cards I got are a Radeon 4650 1GB and the GT610 1GB. The first seems faster and well supported in linux but older. The GT610 is supported in old kernels by their own driver which is usable but discontinued, slower maybe with a better Video Decoding engine while running at high temperatures with not many positive sides beside the OpenGL 4.6 support (3.0 only for the RV730).