SSE4 / Extra L2 cache - Will it make a big difference? [N/Y]

A forum for discussing FAH-related hardware choices and info on actual products (not speculation).

Moderator: Site Moderators

Forum rules
Please read the forum rules before posting.

SSE4 / Extra L2 cache - Will it make a big difference? [N/Y]

Postby Tom » Wed Jan 09, 2008 2:07 am

With the new Penryn processors coming out, I was wondering if the new SSE4 and extra L2 cache will make a big difference in folding speed? Granted they will be faster because of the higher clock speeds, but I wondered if there will be a bigger boost with the added improvements?
Image
Tom
 
Posts: 26
Joined: Sun Dec 02, 2007 2:25 pm

Re: SSE4 / Extra L2 cache - Will it make a big difference?

Postby sneakers55 » Wed Jan 09, 2008 3:23 am

Tom wrote:With the new Penryn processors coming out, I was wondering if the new SSE4 and extra L2 cache will make a big difference in folding speed?


SSE4 won't make a difference until there is a core that takes advantage of it.

As to the extra cache, that depends on the specific WU.
I can see a difference between 2 MB and 4 MB but not consistently.
AMD Athlon X2 Dual Core 4200+ (2.2 GHz)
Intel C2D 6400 (2.13 GHz)
Intel C2D T7800 (2.6 GHz)
PS3
User avatar
sneakers55
 
Posts: 249
Joined: Sun Dec 02, 2007 10:41 pm
Location: Texas, USA

Re: SSE4 / Extra L2 cache - Will it make a big difference?

Postby Tom » Wed Jan 09, 2008 5:06 am

Thanks!

That makes sense with SSE4. Now there will be something new for the programmers to play with. :biggrin:

I know there is a difference between the C2D's and Conroes when it comes to folding, the extra cache being the boost factor. I am guessing the extra with Penryn will help even more on the cores that use it. I guess we will find out soon enough.
Tom
 
Posts: 26
Joined: Sun Dec 02, 2007 2:25 pm

Re: SSE4 / Extra L2 cache - Will it make a big difference? [N/Y]

Postby toTOW » Wed Jan 09, 2008 11:18 am

The Yorkfield is about 5% faster than a Kentsfield at the same frequency. This is mainly due to SSE units improvements. On some WU, the cache will be also usefull but it won't be the case for all WU.

Everything else than SSE and SSE2 is not used by processing cores, so SSE3 or 4 won't change anything until a core taking advantage of them is released ... and I don't think it's currently on PandeGroup's todo list.
Folding@Home beta tester since 2002. Folding Forum moderator since July 2008.

FAH-Addict : latest news, tests and reviews about Folding@Home project.

Image
User avatar
toTOW
Site Moderator
 
Posts: 7999
Joined: Sun Dec 02, 2007 10:38 am
Location: Bordeaux, France

Re: SSE4 / Extra L2 cache - Will it make a big difference? [N/Y]

Postby Tom » Thu Jan 10, 2008 3:22 pm

Thanks for the info. 8-)

I will probably skip the Yorkfield due to the 1600FSB increase and integrated memory controller coming up with the Nehalem processors. Since 8 core processors aren't slated until around 2014, I hope they will come out with a desktop motherboard that will use 2 or more processors very soon. I could use a couple right now! :D

I'm very temped to try a Wolfdale E8400. They will be cheap and overclock past 4Ghz. Plus I may have a spare motherboard coming soon. :wink:
Tom
 
Posts: 26
Joined: Sun Dec 02, 2007 2:25 pm


Return to FAH Hardware

Who is online

Users browsing this forum: No registered users and 1 guest