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Setting up and voltage terms for EP45-UD3* - Page 23

post #221 of 282
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I have never really changed the ref's for the RAM. I can't see it benefiting that much but might have to look into it a little more.
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post #222 of 282
its been a while since i played with it but i think the ram ref should be half the vdimm, wether a little more or less would help squeeze more out of the ic idk but its something i will test when i get chance

*walks off to hug and stroke his p45 ud3r*
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post #223 of 282
I played around with the ram term and ref's yesterday in between storms and the term seemed to have more effect than the refs did. That might be due to these T1's that I have though as nothing seems to get them to run at their rated speed and timings. Raising the Term to 1.08 with the vdimm of 2.20 did help some, but that only got me to 1052 @ their rated 5-5-5-15 timings (the Patriot I picked up from freak runs 1066 @ 5-5-5-15 so I'm pretty sure it's the ram itself).
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post #224 of 282
Thread Starter 
Quote:
Originally Posted by PapaSmurf View Post
I played around with the ram term and ref's yesterday in between storms and the term seemed to have more effect than the refs did. That might be due to these T1's that I have though as nothing seems to get them to run at their rated speed and timings. Raising the Term to 1.08 with the vdimm of 2.20 did help some, but that only got me to 1052 @ their rated 5-5-5-15 timings (the Patriot I picked up from freak runs 1066 @ 5-5-5-15 so I'm pretty sure it's the ram itself).
Might be a long shot but you can flash RAM. I'm not really sure how but I know Mike in the benchmark area flashed some sticks not to long ago. Might be worth looking into.
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post #225 of 282
Quote:
Originally Posted by NoGuru View Post
Might be a long shot but you can flash RAM. I'm not really sure how but I know Mike in the benchmark area flashed some sticks not to long ago. Might be worth looking into.
Thanks. I'll look into it. I have a DFI board coming in later this week that I'm going to try them on. Maybe they'll work better on it.
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post #226 of 282
Quote:
Originally Posted by PapaSmurf View Post
I played around with the ram term and ref's yesterday in between storms and the term seemed to have more effect than the refs did. That might be due to these T1's that I have though as nothing seems to get them to run at their rated speed and timings. Raising the Term to 1.08 with the vdimm of 2.20 did help some, but that only got me to 1052 @ their rated 5-5-5-15 timings (the Patriot I picked up from freak runs 1066 @ 5-5-5-15 so I'm pretty sure it's the ram itself).
Go back a page.. I corrected my earlier statement regarding RAm RefV.. i was mistakenly thinking of the DRAM TermV.

DRAM TermV follows the (DDRv *.5) formula in the BIOS..as far as I can tell the RAM RefV always stays at .90v. Nothing I can do to the memory will benefit from adjusting the RAM RefV.

I have noticed that for RAM stability, if I bump TermV a notch..before I try raising DDRv.. I can often get stable in Windows stress tests.

*DRAM TermV and NB/DRAMv should be the same as well in the BIOS..they move together anyhow For DDRv +2.36v, I manually lower DDR TermV and NB/DRAMv, back down to the 1.12-1.14v range... no matter the DDRv used.

ie- 580mhz FSB, PL10 - Performance Boost @ Turbo
Ram at 580mhz
NB @ 1.46v
NB RefV @ .80v
NB/DRAMv @ 1.13v
DDRv @ 2.41v
DDR TermV @ 1.13v
*all DDR RefV @ .90v 'Auto'
post #227 of 282
Yeah, I saw that post after I was finishing up. Tried DDR TermV up to 1.20 with vdimm of 2.20 to 2.24. 2.20 and 1.08 seemed to work the best so far. Ram Refs are back at 0.90.

Tried NB up to as high as 1.60 and no change.

By NB I assume you are referring to MCH right?

I can run the ram faster if I loosen the timings, but I don't want to do that if I can help it. I just want to figure out why that ram doesn't seem to want to run at it's rated speed and timings.
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post #228 of 282
You shouldnt need ever, more than 1.48v NB/MCH..and I mean ever.

*Your RAM wont run its "stock" timings/settings because your NB is already tight.. RAM timings dont matter so much as you think. Most of the latency comes from sub-timing section which affects MCH/NB latency. This will lower latency overall...without increasing speed of FSB/RAM, or directly lowering RAM timings.

...this is how it is possible to have:

50ns latency @ 1080mhz mem with 5-5-5-16 timings

& also

60+ns latency @ 1080mhz mem with same timings... the latency reduction/increase is coming from the NB..and not the memory at all.

-moral of the story- dont trip on RAM timings if you latency is already good...unless of course you are pushing for more
post #229 of 282
Then why will my Patriot ram with the same specs and the G.Skill I used to have with the same specs as this Kingston run at 1066 and their rated 5-5-5-15 timings. And why did the first set of T1's run at 1066 (in fact as high as 1090) and the rated 5-5-5-15 then? That's what's bugging me. The 2 replacement sets of T1's simply will not run as well as the set they replaced (one of the sticks in the first set had a bad heatspreader that fell off taking 2 of the chips with it). Talking with some other people who purchased them it looks like the latest batches of them don't perform up to snuff. The first set was from late 2009 while the current sets are from early 2011.
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post #230 of 282
I can vouch too..latest batches of DDR2 are all high density IC's.. total crap. Wont even boot in some of my best boards..and runs fine in some craptastic ECS mobo with low-voltage it shouldnt even operate on..

^^This is whats keeping me from booting +5.5ghz right now on this board with my E8500.. *must...find...decent...RAM..*
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