Kingston ValueRam PC4200 with potential, but i'm stuck :(

[Jurgen_vdp]

Hi guys,

I'm following this forum a long time, but just read, not commented or posted. But here I go, my first thread

As I stumbled apon 2 sets of 2GB Kingston Valueram PC4200 with FP-Y5 (rev C) chips on them, I thought I would give it a go to see how far I got.

But now I have a problem. Running fine at 2.15V 4-4-4-12 800MHZ DDR without a sweat 24/7 stable, hours of orthos, gaming, video editing and rendering... But whatever I change above that, my system won't boot. Tried at 450 5-5-5-15, 450 5-5-5-18 up to 2.45V.

My mohterboard is a P5K Premium. So obviously I'm missing a setting which holds me back. Currently I have everything set to auto, except for timings, CPU voltage (1.3V) and memory (2.15V). Should I be looking at North- Southbridge voltages? I only want to see what I could get out of this set, as I don't believe I hit the limit yet

Screenies:




Any comments/suggestions/help would be appreciated.

[jimmyz]

to Xtremesystems

400 @4-4-4 doesn't seem too bad for value ram such as that. You could look into loosening the sub-timings and see if you can break past the 400 wall. northbridge voltage may help some. also a little move v-dimm may be needed, though I would try to keep it low to preserve the ram better. good luck.

[Don_Dan]

Hiya mate!

I think you shouldn't test such big gaps like 50MHz at one test, even with loosened latencies that's still a huge gap, even more when considering the original frequency of the RAM.
You could try with a slightly higher NB voltage, and then clock up in smaller steps of 5MHz, or maybe you could could try raising the FSB in Windows, which is what I do, as you can run stability testing programs to see when they fail.
And try to stay at a lower voltage, although I haven't heard much about those chips ( who's the manufacturer? ), I think you won't see a gain past a certain voltage. 2.45V might even make it worse because of the heat the chips produce.

By the way, do you have some kind of cooling for your RAM?

[Computerville]

You are welcome!

Try raise the NB voltage and go for more Vdim...
Tweak the subtimmings, raise them up...

[snatchmonkey]

Try timings 4-5-4-X and 5-6-5-X. One of the other threads on this forum suggests that these ic's clock much higher with the looser tRCD.

[Jurgen_vdp]

Thanks for all the suggestions... I've tried some more, after reading other threads and fora... Think i've beaten the cr*p out of those cheap ass modules

All tests are done in a closed case, at 21°C ambient (as I want to get the most speed/value for daily use)...
Max CPU temp was 45°C after 8 hours of continous testing. This screen was taken right after... Temps drop back to 20-22°C after 15 seconds of idle...

Sorry for the language in the screenshot but i'm dutch-speaking



Rams are getting slightly warm (my case has quite good airflow), should I push them some more? I'm quite happy now with this daily setting

Vcore: 1,4V
VMem: 2,2V
VNorthBridge: 1,25V
VSouth: Auto

[ixtapalapaquetl]

check out my results with the same chips here: http://www.xtremesystems.org/forums/...7&postcount=21

[STEvil]

Not bad, i've got 4x1GB FP-C4 running at 462mhz with 2.25v iirc. 5-4-4-18 2T

[breakfromyou]

I got some a-data value PC2-5300 up to 510 MHz, cas5, 2.25v

one module survived the attempted 2.3 and 2.35v runs, it did not respond well to voltage above 2.25v

Sounds like a memory controller issue to me. Try taking 2 modules out, and try again.