Did you try to lower the timings? Should be able to hit 250MHz with 3-4-4-8.

I also have Revision C Hynix FP-Y5, managed 940MHz@5-6-5-15 with 2.0v, or 785MHz@4-5-4-12 with 2.0v. What I noticed is that tighter tRCD timings don't go well with these RAMs, for 940MHz@5-5-5-15/785MHz@4-4-4-12, 2.2v is needed. The little increase in performance doesn't really justify the extra 0.2v so I stuck with 940MHz@5-6-5-15 instead

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Added on March 2, 2008, 11:34 pmBy the way, stock vDIMM for value RAMs are usually 1.8v as specified by JEDEC.

This post has been edited by Dreamworks: Mar 2 2008, 11:34 PM

His revision is the same as mine

Define "kind" Seriously... What do you mean by "kind"? I would sure like to get my RAMs higher.

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Added on March 3, 2008, 9:33 pmYou still got yours to 800MHz right? Iirc...

This post has been edited by Dreamworks: Mar 3 2008, 09:33 PM

Might as well just get a non-Hynix since they can generally hit at least 800MHz under 2.0v, unless you can still get your hands on Rev. A or B

This post has been edited by Dreamworks: Mar 3 2008, 11:59 PM

With active cooling, 2.3v should be alright. But it's best to stay 2.2v and below for Value RAMs

Loosen the tRCD timing and try again, FP-Y5 can go higher with tRCD at 5 or 6.

Not kaboom... More like a heart attack

I would rather have 800MHz@5-5-5-15 than 900MHz@5-8-8-20... Seriously, 5-8-8-20 is way too loose

This post has been edited by Dreamworks: Mar 13 2008, 11:59 PM

Just picked up a pair of KVR with Micron D9DCL for my friend, I figured they would at least be better than those Hynix FP-Y5 Rev. E and some of the Rev. C. Now doing 840MHz@5-5-5-15, 1.9v. Didn't really have the time to fine tune the settings though

There were only 2 types of chips to pick from, one is Micron D9DCL... And the other is Hynix FP-Y5 Revision C. From previous experiences, some of the Revision C are not good at all, so a safer choice would be the D9DCl

By fatbody you mean... Rectangular? But D9DCL is still better than Hynix Revision E

I just started my overclocking journey this year, so I have no idea what you meant by fatbody... But since the chips are rectangular in shape, I assume fatbody mean rectangular

Anyway, these D9DCL seems to be bootable at 800MHz@4-4-4-12, which is already better than FP-Y5 Revision C.

This post has been edited by Dreamworks: Mar 16 2008, 11:33 PM

I'm sure most can provided you pump enough juice, I was talking about voltage below 2.0v. My Revision C can hardly do 4-4-4-12 without at least 2.2v