2X1 GIG kit for OCing an Opty 165, 170, or 175

[starwars7]

What is a nice 2X1 GIG kit for an Opteron 165, 170, or 175? How about for OCing it?

What are you using?

Thanks.

 

[Fallengod]

Go to monarch. They have 2gb kits on sale with a rebate for $200 or less for OCZ PC-4000 memory. That should be plenty for ocing with a 166 divider.

Newegg also has 2gb kit of PC4000 G.Skill for $197.

 

[Elfear]

Get the G.Skill PC4000 HZ sticks. I think Newegg has them for ~$200. Average oc for those sticks are in the 270-280MHz range.

 

[TrevorRC]

G.Skill HZs all the way--though after viewing Zebo's thread, might be better to grab some ~130 dollar sticks..
No bling though

 

[keldog7]

See my sig. Works wonderfully at 250 MHz, 2.5-3-2-7 1T with 1:1 divider. My reasearch suggests that I would have difficulty getting it up past 263 MHz with 1T timings.

 

[Fallengod]

Those are some pretty tight timings for 2gb of mem. 2.5-3-2-7

I still say the PC4000 mem for $200 is the best bet. You can easily keep your speed under 250mhz by using a 166 divider. That should allow up to pretty high overclocks. The G.Skill as mentioned, does even overclock past that to like 270mhz or more.

 

[TrevorRC]

Keldog, See DFI-Street--Timings have virtually no effect on performance vs. Mhz.
(Though going by Zebo's stuff, timings and Mhz are irrelevant RW)

 

[starwars7]

Any other votes?
So far one for OCZ, one for Crucial, and looks like 3 for Gskill

 

[keldog7]

TrevorRC and modempower. Yeah, the timings are fairly tight, and yes I've read Zebo's stuff. I've also read the DFI-Street post (several times, actually). In any case, when I was shopping, there was less consensus about the effects of timings on performance. Certainly, the emphasis was generally on Sandra benchmarks...which Zebo has very effectively shown to be essentially meaningless. Just the same, half the fun was *planning* the box, and then overclocking it to the target I'd set. Mission accomplished, in my case. If I were buying today, I *might* buy differently - but only because other ram is physically SHORTER...the flashing lights are mere distraction.
Cheers,
A

 

[starwars7]

Bump. Great comments, any more?

 

[Spike]

I am currently using OCZ plat 2-3-2-5 2x1gb sticks which work well (with a mem divider) but will not give you the oc that the g.skill will. My max OC with my opty 165 @ 1.4v is 2.52ghz (9x280). I can't get any higher without dropping my ram from it's stock 2-3-2-5 to something horrible like 3-4-4-10, also I have to jack the cpu and vdimm voltage. So for my opteron 165 2.52 is the sweet spot, any more requires too much sacrifice.

I would definitly look to the g.skill ram, I may try that sometime soon and put this ocz into my other rig.

-spike

 

[letdown427]

Currently using Crucal Ballistix, just got them at 2-2-2-5 ddr400 at the mo, as my obo only gives a pathetic 2.7v. Once i get that DFI, i'll be OC'ing and making everything work just that little bit harder.

They seem rock solid from the reviews I read before purchasing, and they were on a good deal (for the UK) when I got them.

 

[5t3v0]

Watch out for the G.Skill HZ. I didn't have any luck overclocking them to 270-280MHz nor lowering tCL to 2.5 at my chosen frequency of 229MHz. I'm sure for every person with a great overclocking story to tell, there's a silent disgruntled punter with a bad one. They're still a great kit to run at stock or below, just don't rely on them to overclock. I run mine on 3-3-3-7 1T timings at the same frequency as my previous GeIL 1Gb kit which was on 2-3-3-6 1T. The loss in performance due to slower timings is negligible. Everest Read scores were even improved.

 

[Mucker]

GSkill 2GBZX. This is the easiest ram I've used for OCing on my Ultra-D. Paired up with my Opteron's strong memory controller, I'm getting very good performance.

Mine will do:

DDR 400-420 at 2-3-2-5-1T @ 2.6v
DDR 420-480 at 2.5-3-2-5-1T @ 2.7v
DDR 480-520 at 3-3-2-5-1T @ 2.7v

If you want higher memory bandwidth go for the 2GBHZ....

 

[buzzsaw13]

Originally posted by: Elfear
Get the G.Skill PC4000 HZ sticks. I think Newegg has them for ~$200. Average oc for those sticks are in the 270-280MHz range.

I think the HZ's are hit or miss for overclocking, I've only been able to get mines stable up to 265mhz, anything more and windows crashes on boot or crashes during load.

 

[starwars7]

Originally posted by: Mucker
GSkill 2GBZX. This is the easiest ram I've used for OCing on my Ultra-D. Paired up with my Opteron's strong memory controller, I'm getting very good performance.

Mine will do:

DDR 400-420 at 2-3-2-5-1T @ 2.6v
DDR 420-480 at 2.5-3-2-5-1T @ 2.7v
DDR 480-520 at 3-3-2-5-1T @ 2.7v

If you want higher memory bandwidth go for the 2GBHZ....

Sounds like either the GSkill 2GB ZX or HZ are the way to go, any more comments on either of them?

 

[Mucker]

Here's a great thread on 2GBZX: http://www.xtremesystems.org/forums/showthread.php?t=77205

and 2GBHZ: http://www.xtremesystems.org/forums/showthread.php?t=74524

Both sets sell at Newegg for around $200....

 

[couppi]

G.Skill PC4000 is great. I've got mine running at 280 mhz x 10. It's running at 3-4-4-8, but the few ms slower that looser timings make is more than made up by the 1:1 ratio and the 280 mhz fsb.

 

[5t3v0]

If you read around, there's good & bad OC stories for both ZX & HZ. At least with HZs you're guaranteed to get at least 250MHz, albeit at 3-4-4-8 timings. To OC the ZXs to that speed you'd have to loosen their timings to something similar to the HZ anyway & even then you might not get them as high, so why take the risk. Get the HZ over the ZX unless tight timings at stock speed is more important to you.

BTW couppi, you are one lucky guy. What vdimm are you using there?

 

[Mucker]

Something I like about the ZX is that tRP stays at 2 up to DDR520. I like the 3-3-2-5-1T better than the 3-4-4-8-1T.

With that said, you can't go wrong with either set. If you prefer tight timings, I'd recommend the 2GBZX. For high bandwidth, the 2GBHZ......

 

[Stoneburner]

I could not get my zx to even 240 at 3-5-5-10 and 2t, and i tried from 2.65 to 2.85 volts and even tried relaxing everything. I'mma get some Hx and see how it works.

ANd while i've seen no differnce with loose rv. tight timings, 1T makes a huge difference in terms of windows responsiveness.