Core i7 860 Performance

[itsrickjames]

I was looking at some used parts I can get, and I might be able to piece together a i7 860 with a motherboard for right at $100 (possibly with an SLI motherboard). What kind of PPD could I expect over my Athlon II X4 635 (HFM shows my system @ 5538PPD roughly), and could I run -bigadv? Would I need a 64-bit OS for -bigadv if I can run it on the i7 860?

 

[lassiterb]

a stock 860 should yield around 11K - 12K PPD on winsmp A3 units last time I ran one.

 

[lehmann]

my i7-860 runs 4.0 30k on a 2685 200X20 1.42 vcore with a thermalright venemous X 2500rmp fan. 21,000 with a 2684. 18k to 20k on most smp clients except 6071 14,500ppd

 

[sirmonkey1985]

overclocked yes the 860 will run bigadv.. down fall is that it has far less memory bandwidth then the lga-1366 processors have so it loses probably 5-6k PPD because of that.. and no you do not need a 64bit os to run bigadv.. only the linux client does i believe..

 

[musky]

and no you do not need a 64bit os to run bigadv.. only the linux client does i believe..

The jury is still out on that one, though. A couple of WHS machines we have (Kendrak and jebo) have failed on bigadv units. It may be because of the 3Gb memory limit for 32 bit OS's, or it may be due to something else. You will be safer with a 64 bit OS and 4+Gb of memory.

 

[sirmonkey1985]

The jury is still out on that one, though. A couple of WHS machines we have (Kendrak and jebo) have failed on bigadv units. It may be because of the 3Gb memory limit for 32 bit OS's, or it may be due to something else. You will be safer with a 64 bit OS and 4+Gb of memory.

or maybe its WHS thats the problem and not the 32bit OS? since we know people have run these WU's on systems with less then 3 gigs of ram..

 

[itsrickjames]

or maybe its WHS thats the problem and not the 32bit OS? since we know people have run these WU's on systems with less then 3 gigs of ram..

The other limitation of a 32-bit os that many people don't know about is 2gb per process maximum. It could also be that causing the issue.
http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx

 

[sirmonkey1985]

The other limitation of a 32-bit os that many people don't know about is 2gb per process maximum. It could also be that causing the issue.
http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx

true, there is a fix for that though..


just none of the links for it are working anymore.. its an old supreme commander fix for 32bit xp/vista..

if you want to search through it and find what ya need heres the link..

http://forums.gaspowered.com/viewtopic.php?t=2382

 

[itsrickjames]

true, there is a fix for that though..


just none of the links for it are working anymore.. its an old supreme commander fix for 32bit xp/vista..

if you want to search through it and find what ya need heres the link..

http://forums.gaspowered.com/viewtopic.php?t=2382

I remember using the /3GB switch on some heavily used exchange 2003 servers back before sp1 or sp2, and some Photoshop PC's.. Totally forgot about it even lol. I knew it was different to setup Vista 32-bit to do similar just never looked at how. Maybe the few with WHS 32-bit peeps can try it and see if it works?

 

[lehmann]

overclocked yes the 860 will run bigadv.. down fall is that it has far less memory bandwidth then the lga-1366 processors have so it loses probably 5-6k PPD because of that.. and no you do not need a 64bit os to run bigadv.. only the linux client does i believe..

its only down 1500ppd on a 2685, 500-1000ppd on a normal smp. thats @4.0 ghz. evan that is a little of a stretch as my 920 runs 210X19 vs 200X20 for the 860

 

[mplee]

My results pretty much match lehmann's. When I was running it, I was getting anywhere between 29.5k to 31.5k ppd depending on the WU. This is at 195x20. Luckily, I never got a 2684 on the machine.