Which one is better for cPanel hosting? I don't know what makes the 2 different and what are the advantage and disadvantages of both processor. But in totality which is better if I can get both of them in the same price?
All things work together for the good of those who love God - Romans 8:28
Well, someone can correct me if any of this is wrong...
The 920 works on the X58 chipset. As the advantages would apply to a server (maybe):
-It supports triple-channel memory although I have no idea whether typical website stuff will actually take advantage of all 3 channels (maybe someone else does). You'd need either 3 or 6 memory sticks in there to fully utilize it.
-Assuming the motherboard it's on has 6 memory sockets (2 per channel), a potential advantage is it's easier to get more RAM on there. From what I remember of my own (enthusiast, not server) motherboard, can stick 6x4GB sticks for a total of 24GB of RAM although due to chipset limitations (in my case anyway), it'll only access up to 23GB of it.
The 860 works on the P55 chipset I believe.
-Assuming Turbo's enabled in the BIOS, the 860 has more Turbo steppings than the 920 IIRC, so possibly a little more CPU oomph if turbo's enabled.
-Only 2 memory channels, probably only 4 memory sockets so if using 4GB sticks you'd probably be looking at 16GB max.
Performance-wise from what I read they seem to be pretty similar (with the exception of the 860 doing a little better when Turbo kicks in). I think there's more of a difference in the platform itself but I could be wrong.
Again maybe someone else will come in and add (or correct me) on anything here. For all I know, one could have a massive advantage over the other when it comes to servers, but from what I'd guess, the 860 at most might give slightly higher speeds/clocks, while the 920 may give the potential for adding more RAM, and has the capacity for more bandwidth to it if it's needed.
If you need more RAM just go for the Xeon variant of the i7-860, which can do 32GB max. It is the Xeon X3450.
The i7-860 uses a lot less power, so its greener, runs cooler, and is it a bit more powerful depending on the application its used for.
So with using the Xeon variant of the i7-860, you surpass the RAM limitation, which should make it the winner.
Get a Xeon X3440 or higher.
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