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Overclocking Opty 165, Mushkin RAM & 7900GTX
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06-02-2007 3:02pm#1Ok well this has been a LONG time in the making, probably the LONGEST amount of time i've ever had to wait to get overclocking my rig.
I bought this Opty off ebay about 6 months back off a guy who said he had managed to get it to 2.7Ghz on air, i'm aiming for 3Ghz (I like a challenge
), after having numerous problems overclocking it on a ASUS A8N-SLI and then an ABIT Fatal1ty I dug deep and went DFI Expert, and its been running perfect since. While i've had it i've spent my time buying choice pieces for the system, including the Tuniq, the HR05 and the VF900 for my 7900GTX. I've also set up a RAID 0 with 2x36GB ADFD WD Raptors. I can finally say now this system is complete and ready to be burnt alive (just in time for a C2D upgrade :rolleyes:)
So lets begin :devil-smi
First off, here a 3Dmark06 screenshot with everthing at STOCK
Also, whenever i've overclocked before, getting my RAM to allow me to overclock my CPU has always been my headache, which is why I bought this Mushkin xp4000 RAM to give me some headroom. I could not get it stable past 240 (DDR480) on my previous ASUS A8N-SLI, so I thought for a while they might of been dud sticks, turns out the boards fsb limit was holding me back. Since having them on my DFI Expert (OCZ Tonys BIOS) they have been running like a dream. I got some help over at the Mushkin forums as to what I should have my timings at, they are:Command Per Clock- Enable TCL- 3.0 TRCD- 4 TRAS- 8 TRP- 3 TRC- 7 tRFC- 16 TRRD- 2 tWR- 3 tWTR- 2 TRWT- 4 tREF- 0780 tWCL- 01 DRAM Bank Interleave- Enabled DQS Skew Control - auto DQS Skew Value- auto DRAM Drive Strength - Level 7 DRAM Data Drive Strength - Level 3 Max Async Latency- 8ns DRAM Response Time - Fast Read preamble Time- 5ns Idle Cycle Limit- 16-32clks Dyanamic Counter - Enable r/w Queue bypass: 16X Bypass Max - 07X 32 Byte Granularity - Disable (4 bursts)
Here are some screenshots of benchies in memtest86, I ran them while I was at work:
At 250 (DDR500) @ 2.61v
At 260 (DDR520) @ 2.61v
At 270 (DDR540) @ 2.61v
*bummer* At 280 (DDR560) @ 2.61v
Still i've got some headroom with my voltages. Next i'm going to try the RAM at 280 @ 2.71v and see if I can pass 8hrs of memtest86.
Just for ****s and giggles I threw my cpu multi up to x9 and booted into windows to run 3dmark06. w00t an extra 700 points having the RAM at DDR540 and the CPU at 2.4Ghz
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always have it under, there is no benefit to be had overclocking the HTT, if your fsb is over 250 then keep it at 3x.
Well here are some more pics, getting difficult to get them stable at 280Mhz, although the number of errors over a 9 hour period are going down with the more voltage I give it.
Also a note, the Dominator Airflow fan IS making a big difference. I tried running it at 270 @ 2.61v and it spewed out over 3000 errors after a few hours, when I turned the fan on I got no errors
Anyway, getting back to this RAM, here it is at 280Mhz @ 2.77v, 11 errors *dammit*
Here it is at 280Mhz @ 2.8v, 4 errors, better, but not good enough
I'll be trying some higher volts tomorrow, if I can't get it stable at 280Mhz before 2.9v then i'll throw in the hat and begin overclocking the CPU.
BTW, about the 3Dmark06 score, it really isn't that good anymore, considering the world record is over 22,000. But I did notice one thing, having my CPU overclocked by 600Mhz only gave me around 600 extra points, whereas I ran a test with my graphics card overclocked by only 20Mhz and it gave me an extra 200 points. 3Dmark06 seems to be heavily weighted towards the graphics card. I'm going to be running some superpi benchs when i'm overclocking the CPU.0 -
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*dammit* ok thats it, i'm not wasting anymore time trying to get this ram stable at 280Mhz, i'll work on maybe seeing if I can get the timings tighter at 270Mhz.
I tried 280Mhz @ 2.84v today and it failed after 9 hours with 29 errors, I also forgot to take a picture
I'll try setting Trwt to 3, Trfc to 15 and maybe set CAS to 2.5 if i'm lucky.0 -
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Ok well i think this is were i'm going leave it for now with this chip. I can be happy with 2.7Ghz and DDR540. Here are some screenshots. w00t, I got nearly and extra 1200 points out of this overclocking.
BTW my 7900GTX is overclocked to 720/1760
Also here's my CPUz validation0 -
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Hi,
am new in this board and in Ireland (I'm from Italy)
I had a DFI NF4 Ultra Infinity and a MSI K8N Neo4-FI (I both break the chipset cause of the waterblock dancing :mad: ) I think I will order tomorrow an A8n32-Sli
Although, I have an Opteron 165 and a Nvidia 7900gt (and two raptor 36gb )
When I was @ liquid I managed to overclock the cpu to 2825 mhz (9x313)
The memory (gskill 512mbx2) 2-2-2-5 @ 200mhz (i don't remember the multi)
I have an unlucky vga so I can't overclock it too muck.
I think that I did about 7000 point overclocking at max every thing I could :rolleyes:
Overclocking @ air (I think, but I'am not sure as all my screenshots are in the motherbard broken computer) I reached 2750-2800 full stable ofcourse.
If you need some help don't bother asking me.0 -
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