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i7950 vs i7975

post #1 of 11
Thread Starter 
The i7975 is suppose to be better than the 950. If one were to build 2 same PCs and one had a 950 and the other had a 975 both clocked at the same speed how would one out perform the other.
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post #2 of 11
I believe their the exact same at the same speeds? Only difference is one is extreme, unlocked multi,
     
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post #3 of 11
The only advantage to the 975 is the higher stock speed and the unlocked multiplier, if they are clocked to the same speed then there is no advantage of one over the other
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post #4 of 11
I'll break down the entire line for you and show the comparrison.

i7 950 4c/8t 8mb 45nm 3.06ghz $300
i7 960 4c/8t 8mb 45nm 3.2ghz $320
i7 975EE 4c/8t 8mb 45nm 3.33ghz Unlocked Multi $1050

These 3 CPUs are exactly the same on the inside besides the unlocked multiplier on the 975. With the unlocked multiplier and the higher stock QPI speed, the ram can be run at higher speeds at stock without overclocking the CPU speed (You'd still need to adjust VTT to stabilize).

However each one of these chips are essentially the same. Heck, they will more than likely overclock the same as well. The i7 975EE just costs more and allows you to do very heavy CPU overclocking without adjusting the baseclock. It realistically makes overclocking easier, but running a higher baseclock can provide higher performance for the overall system.
Edited by ChickenInferno - 2/17/11 at 1:21pm
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post #5 of 11
^^ Perfect answer!
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post #6 of 11
Thread Starter 
Quote:
Originally Posted by ChickenInferno View Post
I'll break down the entire line for you and show the comparrison.

i7 950 4c/8t 8mb 45nm 3.06ghz $300
i7 960 4c/8t 8mb 45nm 3.2ghz $320
i7 975EE 4c/8t 8mb 45nm 3.33ghz Unlocked Multi $1050

These 3 CPUs are exactly the same on the inside besides the unlocked multiplier on the 975. With the unlocked multiplier and the higher stock QPI speed, the ram can be run at higher speeds at stock without overclocking the CPU speed (You'd still need to adjust VTT to stabilize).

However each one of these chips are essentially the same. Heck, they will more than likely overclock the same as well. The i7 975EE just costs more and allows you to do very heavy CPU overclocking without adjusting the baseclock. It realistically makes overclocking easier, but running a higher baseclock can provide higher performance for the overall system.
Very nice. So if one were to get the 950. It could be OC to say 4ghz.
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post #7 of 11
Quote:
Originally Posted by tango bango View Post
Very nice. So if one were to get the 950. It could be OC to say 4ghz.
Yeah, almost any 9xx can go to 4Ghz, just the Extreme series do not need the BCLK adjusted.

Quote:
Originally Posted by ChickenInferno View Post

These 3 CPUs are exactly the same on the inside besides the unlocked multiplier on the 975. With the unlocked multiplier and the higher stock QPI speed...

...but running a higher baseclock can provide higher performance for the overall system.
Increasing the BCLK would increase the overall performance of the system, but this is not really true. Everything on the X58 is adjustable via multipliers and the system runs best by leaving the BCLK at 133 and adjusting the multipliers(UCLK,CPU,Mem,QPI,etc...).

Also the stock QPI on all x58 boards is 4.8, all I7(x58) can run at 6.4, but only the Extreme series are rated at this speed(which is really meaningless).
Edited by tconroy135 - 2/17/11 at 1:52pm
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post #8 of 11
Quote:
Originally Posted by tango bango View Post
Very nice. So if one were to get the 950. It could be OC to say 4ghz.
4GHz is easy peasy with the 950.
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post #9 of 11
Thread Starter 
I love this place. I can learn something here everyday.

So that QPI thingy don't really matter.
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post #10 of 11
Quote:
Originally Posted by tango bango View Post
Very nice. So if one were to get the 950. It could be OC to say 4ghz.
Assuming you have a good air cooler or decent watercooling, yes, and its not all that difficult to get to 4ghz, depending on your chip.
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