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  #11 (permalink)  
Old April 13, 2007, 03:19 PM
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What he said..... :)

Real world performance would probably be hard to notice, but I'd imagine that applications like large file conversions or ripping mp3s would show a difference.
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Old April 13, 2007, 03:24 PM
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Great, thanks- it's good to know
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Old April 13, 2007, 11:37 PM
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Most of us probably read french reasonably well on here ;)

As for a 15% difference in performance. You've got to be kidding. maybe what you meant to say was 1.5%.... Even then, I'd say you're reaching.

I haven't see ANYONE else report anything that dramatic in terms of the differences between the two cache sizes.
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Old April 14, 2007, 12:38 AM
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Come Apr. 22nd I am gonna go for either the E4300 or E4400.

Also here is a Core 2 Duo E6420, E6320 and E4400 review.
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Old April 14, 2007, 08:22 AM
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That's a pretty detailed set of benchmarks, thanks for the link.

Based on that... I'm definately going to go e6420.

Even if I don't sell my current rig (I'm not going to give it away) I'm sure I'd post some pretty decent (in comparison to what I now have) performance on the Asrock combo board with my ddr 500.
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Old April 14, 2007, 11:30 AM
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If you are a folder (and we need more people on the canucks folding team ) then you will see a difference with 4MB cache. On some of the large cache luving wu's as much as a 50% improvement in performance.

It will be interesting to see if the 6320 and 6420 oc as well as their 2mb cache brethren. Many people attributed the lower oc'ability of the 6600's to the larger 4 mb cache. I expect intel may have made other improvements too in the later steppings ... in the past the stepping improvements usually gave similar oc'ing but at lower volts.

eg. I had some original stepping 930D presslers only a few of which would fold stable at >+ 4 ghz, with 1.4+ V. now i have 5 c1 steppings that all fold at 4.0-4.2 ghz with only ~ 1.3375-1.3625 V.

Being able to get a decent oc with low V translates directly into a reduced power bill for folding 724. Also, easier cooling and less stress on mobo's.

Now if we can see some new quad steppings i would be really happy.

Unless there are new steppings out for the 6600, i wouldn't be suprised to see the 6420 and 6320 overtake the 6600 as the DC folding cpu of choice.
I am pretty sure there has been a new 6600 stepping but i don't have one - i have been focusing an quads lately. The 6300 and 6400's were great folding cpu's with their high oc/fsb until more demanding wu's starting coming out ... then their perfomance was hurt a lot compared to the 4BM cache cpus.
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Old April 14, 2007, 12:20 PM
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Would GPU folding still trump the SMP client with an E6*** dual core proc?
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Old April 14, 2007, 08:10 PM
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Quote:
Originally Posted by sswilson View Post
Would GPU folding still trump the SMP client with an E6*** dual core proc?
SMP folding will outperform the gpu client on any c2d even with no oc.

A really oc'ed gpu might get up to 800 ppd, but normaly ~600 ppd.

I don't have any c2d running stock but a 6300 would prolly get 900+ ppd.

My oc'ed c2d's (1 6400 and 4 6600) average 2000-2500 ppd each running smp under native linux. Under windows, smp is ~ 20% lower atm. It depends on what wu's you get and the linux and windows wu's are different.

So if you have a dual core c2d, best production is linux smp, then windows smp, then gpu + single core, then 2 single core instances.. GPU folding doesn't work very well alongside SMP in windows, atm at a least, and you are better off to just run smp.

The same is true on the intel presslers eg 930D.

On DC AMD rigs, it is different but not having any i can't quote off the top of my head. But for some it is better to run 1 gpu + 1 single core instance instead of smp.

Of course, native linux may not be an option if it is a main rig and you need windows apps. Some folks are still running linux smp under vmware on the 64 bit vmware capable rigs even after the windows smp beta client came out. The ppd is similar between win smp and vmware/linux smp.
It isn't a bad way to get some experience with linux. I had never used linux till the linux 64 bit smp client came out. Still a noob but ubuntu is pretty easy. And there are a few good guides around.


... oops ... sorry for the offtopic threadjack

Last edited by pscout; April 14, 2007 at 08:13 PM.
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  #19 (permalink)  
Old April 14, 2007, 08:16 PM
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Quote:
... oops ... sorry for the offtopic threadjack
Heh.... that's ok, it's my thread and I answered my own question in the second or third post..... :)

I guess I'll be running the SMP client then. It'll actually be a bit of a relief as I'm more comfortable running a cpu full throttle 24/7 than a gpu.
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