i7 920 vs i7 860 direct test comparison

[INFRNL]

this will be interesting. thanks for your time Bob!!!

[123bob]

You're most welcome! Any excuse to add some hamsters on...This is in the name of science after all...

OK, the first of many updates, this one somewhat unexpected. I was browsing the forum on the 860 rig (the one I'm typing on now) and it blue screened on me...

I had noted with the changes I made to bring up the QPI, it somehow dropped the reported vcore in CPUz. I don't know what that is about... I suppose the QPI boost requires more work from the CPU. So, I boosted the vcore by .007 volts. My Boinc loaded CPUz is now 1.232 on the 860 rig. We'll see how she runs. I can't wait to see how it produces with this subtle observation of vcore change.

Bob

[DAK1640]

ok 123bob///I am on a need to know basis...report in already

[123bob]

ok 123bob///I am on a need to know basis...report in already

Yes Sir! Reporting in. We wouldn't want to keep Da Goosey waiting now....

I had another blue screen overnight on the 860 rig. I'm thinking I didn't boost vcore enough. So, I did the math and boosted it back up to the level it ran on the 1156 thread. Namely, CPUz loaded with Boinc now reports 1.264 volts. I think it should run smooth now.

The 920 rig ran fine and the estimated completion ranges for HFCC WUs is down to about 5 hours each. I expect that to drop a bit more.

One thing to note is that my numbers for the first few days on the 860 will be skewed a little higher since I still have some HCC WUs pending validation. Those need to clear out before I'll get true numbers. I may try to back them out of my score by doing the math on individual WUs, but that might be more of a PITA than it's worth.

Stay tuned,
Bob

[123bob]

OK, nine hours later and the vcore bump on the 860 seems to have done the job. Crunching away on HFCC.

Bob

[emuexport]

Heres my setup to add to the comparison Bob.

Both the i7-860 and i7-920 are running @ 4GHz and have the same QPI and multiplier etc. Only thing is they have different OSs but are both x64 so shouldnt be too much of a difference.

Anyway heres some screens.





If you think it will make a difference I'll grab another HDD and install the same OS on both.

I think same as you that it will most likely take a few days for the other WUs pending to finalise so might have to run it like this for a while. Off to the hardware store soon to get a kill-a-watt.