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*OFFICIAL* SuperPi 1M Top Times - Page 209

post #2081 of 2931
Is the i7 870 at the same clocks better or worse than a 920 with super pi?
(Other hardware is in the sig. Same ram only 4 gig for the 870.)
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post #2082 of 2931
Thread Starter 
The Core i7 920 usually has better efficiency.
post #2083 of 2931
Hmm, so basically I would be better of with a pi run on the i3 instead of the i7 870.
Was just wondering if its worth the effort. Dont have time now, but I could do it soon.
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post #2084 of 2931
Quote:
Originally Posted by Bastiaan_NL View Post
Hmm, so basically I would be better of with a pi run on the i3 instead of the i7 870.
Was just wondering if its worth the effort. Dont have time now, but I could do it soon.
Generally whatever you can get the highest clock speed out of will give you the faster pi run. At the same clock speeds memory & efficency will make a difference, but superpi is more about the cpu Mhz.
    
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post #2085 of 2931
However, the i3 and i5 processors generally suffer from having less cache, especially in 32M. That's why if you check the world records, a lower clocked 980X (300MHz or so) is beating the 661's and 670's. I think your 870 should be very close to your 920 with the 920 probably edging it out a bit because of the triple channel bandwidth.
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post #2086 of 2931
Quote:
Originally Posted by FtW 420 View Post
Generally whatever you can get the highest clock speed out of will give you the faster pi run. At the same clock speeds memory & efficency will make a difference, but superpi is more about the cpu Mhz.
Okay, hopefully I can get this chip higher than the 920.
I could do 4780mhz on the 920, but the qpi was holding me back. This one has an higher multi so with a bit of luck....

Quote:
Originally Posted by xxbassplayerxx View Post
However, the i3 and i5 processors generally suffer from having less cache, especially in 32M. That's why if you check the world records, a lower clocked 980X (300MHz or so) is beating the 661's and 670's. I think your 870 should be very close to your 920 with the 920 probably edging it out a bit because of the triple channel bandwidth.
Though with a 1m run the i3 isnt that bad.
I still have the i3, though its not in a rig atm. Just wanted a good chip for folding so I have the i7 870 now.
I'll see if I can get a few good runs
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post #2087 of 2931
Thread Starter 
Quote:
Originally Posted by xxbassplayerxx View Post
However, the i3 and i5 processors generally suffer from having less cache, especially in 32M. That's why if you check the world records, a lower clocked 980X (300MHz or so) is beating the 661's and 670's. I think your 870 should be very close to your 920 with the 920 probably edging it out a bit because of the triple channel bandwidth.
You can see this in 1M runs too. My Core i7 920 has much higher efficiency than the i3, especially since I can run memory's at high frequencies now (i3 was REALLY lacking in the IMC department).

Quote:
Originally Posted by Bastiaan_NL View Post
Okay, hopefully I can get this chip higher than the 920.
I could do 4780mhz on the 920, but the qpi was holding me back. This one has an higher multi so with a bit of luck....


Though with a 1m run the i3 isnt that bad.
I still have the i3, though its not in a rig atm. Just wanted a good chip for folding so I have the i7 870 now.
I'll see if I can get a few good runs
I'm guessing you would need around 4.9GHz to make up for the extra memory frequency you were allowed to run on the 920 and the extra cache.
post #2088 of 2931
Quote:
Originally Posted by nolonger View Post
You can see this in 1M runs too. My Core i7 920 has much higher efficiency than the i3, especially since I can run memory's at high frequencies now (i3 was REALLY lacking in the IMC department).


I'm guessing you would need around 4.9GHz to make up for the extra memory frequency you were allowed to run on the 920 and the extra cache.
Yeah, that's what I meant.

Check these two out. #1 and #3. It could possibly be efficient OS, but I'd put it on cache.



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post #2089 of 2931
Bass, I think the #1 vs #3 is more a comparison between dual channel and triple channel bandwidth. That and I believe the i7 cousins have a slightly tighter cache latency. I know the 920's do.
    
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post #2090 of 2931
here's my score....
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