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[TPU] Intel Sandy Bridge Quad-Core Processor Tested - Page 6

post #51 of 61
Quote:
Originally Posted by Thedark1337 View Post
i smell an Intel fanboy. AMD bulldozer will be 12 cores with 2 threads per core IIRC. How is that slower than a 2 core processor. PROVE IT
Maybe its your own blind, over-zealous AMD musk clouding your judgement.

Stating facts =/= fan boy.

Quote:
As it turns out, this sharing of components across the cores impacts performance. Fruehe says that a pair of Bulldozer "cores" will yield about 1.8 times the performance of what a single, whole core would have. AMD will probably see a bunch of raised eyebrows about this 10 per cent performance hit at first. But Fruehe says that it is this modular approach to core design that will allow AMD to crank up to 16 cores into a single chip in 2011 with the "Interlagos" top-end Opterons, presumably to be called the Opteron 6200s, and stay in the same thermal bands as the current six-core "Istanbul" Opteron 8400 chips.
Source

Quote:
Originally Posted by Brutuz View Post
Thuban matches Core i7 clock for clock, Bulldozer will (I'm guessing) at least match Sandy Bridge.

Thuban is not as fast as a Nehalem Core in clock performance... Which means single-threaded application will be faster on i7 than Phenom X6 if they are at the same clock speed.

Based on the benchmarks that I've seen, Thuban only edges out the i7 in rendering and looses out in every other aspect by varying amounts.

Yes, it is 8 threads v. 6 threads but SMT a) doesn't scale linearly and b) only offers 40% of the performance of a physical core in the best case scenario.
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post #52 of 61
Quote:
Originally Posted by BizzareRide View Post
Thuban is not as fast as a Nehalem Core in clock performance... Which means single-threaded application will be faster on i7 than Phenom X6 if they are at the same clock speed.

Based on the benchmarks that I've seen, Thuban only edges out the i7 in rendering and looses out in every other aspect by varying amounts.

Yes, it is 8 threads v. 6 threads but SMT a) doesn't scale linearly and b) only offers 40% of the performance of a physical core in the best case scenario.
It does when properly overclocked, the problem is that most reviewers don't even touch the IMC and L3 cache (NB) speed, see the link in my sig and you can see the massive amount of performance increase in WinRAR. (200KB/s, the same as going from 2T to 1T on my RAM, as well as enough to make up for a 600Mhz lower core clock speed compared to another Phenom II when the NB is at 2.8Ghz)

Add in the fact that Thuban gets to 3,200Mhz NB speed easily (I had to tweak like crazy to get 2.8Ghz reasonably stable and it degraded my chip) and you can see why a properly OCed Thuban matches Core i7.
    
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post #53 of 61
Yea OCing AMD chips is a little more different. This might be because AMD chips are more limited by the subsystem and uncore speeds.
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post #54 of 61
Quote:
Originally Posted by Brutuz View Post
It does when properly overclocked, the problem is that most reviewers don't even touch the IMC and L3 cache (NB) speed, see the link in my sig and you can see the massive amount of performance increase in WinRAR. (200KB/s, the same as going from 2T to 1T on my RAM, as well as enough to make up for a 600Mhz lower core clock speed compared to another Phenom II when the NB is at 2.8Ghz)

Add in the fact that Thuban gets to 3,200Mhz NB speed easily (I had to tweak like crazy to get 2.8Ghz reasonably stable and it degraded my chip) and you can see why a properly OCed Thuban matches Core i7.
Does this hold against a properly OC'd i7? I'd be very sceptical

Edit: Well, not so much sceptical, but I'd have thought the i7 would have edged it clock-for-clock in a single threaded test like SuperPI (with HT off)
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post #55 of 61
Quote:
Originally Posted by chemicalfan View Post
Does this hold against a properly OC'd i7? I'd be very sceptical

Edit: Well, not so much sceptical, but I'd have thought the i7 would have edged it clock-for-clock in a single threaded test like SuperPI (with HT off)
Since most games use 1 thread, would they count for single threaded apps? If so, the i7, clock for clock, get rougly 2fps more then phenom counter-parts, while being grossly overpriced (for gaming anyways).
post #56 of 61
Quote:
Originally Posted by meticadpa View Post
Q9550 was a completely different architecture...
No it wasn't.

Q6600 -> Q9550 = Kentsfield -> Yorkfield. it was a die shrink, but still based on the Core 2 arch. Nehalem was the new arch
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post #57 of 61
So my question in all this is; would it be silly to buy an i7 930 and a 1366 board now with all of this around the corner? I mostly use my computer for gaming and some college work, nothing over the top or anything.
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post #58 of 61
Quote:
Originally Posted by infinite illusions View Post
So my question in all this is; would it be silly to buy an i7 930 and a 1366 board now with all of this around the corner? I mostly use my computer for gaming and some college work, nothing over the top or anything.
A better answer to your question would be to make a new thread, instead of bumping a 4 week old one, and then effectively threadjacking.

In answer to your question, 1366 is still immensely powerful, go with what you think will net you performance for your money, I don't see any point in waiting, in all honesty.
Re:Define
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post #59 of 61
In my opinion, you should just wait because SB launches this year according to Intel's recent quarterly report and from the looks of the leaked benchmarks, it performs better than Bloomfield in every respect from clock performance to memory bandwidth despite having only dual channel RAM. Since it is a mainstream part, it will be cheaper than the current offerings and better to boot.
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post #60 of 61
does not look impressive at all.

not one bit.

Quote:
Originally Posted by BizzareRide View Post
2 cores performing 180% more then a single core? GIVE ME. Last time I checked, you usually only get 130% performance increase from adding more cores????
Edited by Domino - 7/18/10 at 9:48am
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