P4 2.4a Prescott, Abit IS7-E, HyperX PC4000 Help.

[trueimage]

Ok I am trying to get the most out of this cpu. Right now I am only using the stock HSF, unitl I get a Thermalright of some type. I have a few issues.

1) according to MBM5 and CPU-Z the cpu is being undervolted. if i set 1.43xx i get 1.39-1.41v ? what gives? power supply or just the mb?

2) I bought PC4000 Kingston HyperX. It is now running at 200mhz (160 fsb, 4:5 ratio) and so cpu-z reports it as pc3200. I bought this 2nd hand so how can I tell if its truely pc4000 (see below)

3) If i try to boot at higher than 160-170 fsb, it wont post, or at least not completely, freezing at the dram detection. This cpu has worked for someone else at 3240 (180fsb) with pc3200 and even with 1:1 i can't get it too post properly.

4) Tell me why I need to boost DRAM and/or AGP voltages if, even though my fsb is higher, the agp/pci bus is fixed at 66/33 and my dram (if really pc4000) is underclocked at 200mhz (even at 180 fsb it would be 180 @ 1:1 or 225 @ 4:5... pc4000 is rated at 250 minimum right???)

5) Should I let my ram timings be set by SPD if I'm under the 250mhz rating? They are supposed to be 3-4-4-8 at 250, but under that shouldn't they run faster?

6) anyone with an abit is7 mb or ic7 i think is similar bios, help me out with bios settings, i haven't overclocked on a p4 before, my last overclock really was my duron 600@1000

Thanks!

 

[THUGSROOK]

1) thats normal

2) thats normal

3) try these bios settings.....
NBS800 1:1
GAT = auto, auto, auto, disabled, disabled
2.8v vdimm
1.65v vagp

4) it has more to do with the motherboard and vid card then the ram itself.

5) always set the cas settings yourself, not by SPD (especially on an ABIT board)

6) the Abit boards are monsters, but with some time youll start to figure it out.

HTH

 

[FelixDeCat]

The i865 / i875 chipsets are intels first official support for pc3200, which is 400mhz. If you are running higher than 400mhz your mobo wont report it officially for some reason. Its kind of like a spedometer maxing out at 120mph. You know your going 140, but your spedo says 120.

Im running mine right now at 532mhz which is pc4200, but the bootup screen wont display anything higher than pc3200.

 

[trueimage]

ok i have it running now:

3243.1 MHz
x 18.0
180.2 FSB
720.7 bus
I bumped the core voltage up 1 notch from the lowest just to be safe

cpu-z says 1.328v-1.344v core

My ram is at 3-4-4-8
180.2 Mhz, 1:1
I wish there was a 4:5 ratio for N/B 800 mode, only 1:1, 3:2, 5:4

it says 1024mb, channels: dual, performance mode: disabled... what does that mean?

Think i could up my timing a bit since its running 70mhz below spec??

DRAM 2.65 and AGP 1.60

i'm running prime95 torture test blend mode now

anything else?? I've gotta get a Thermalright my temps are 61C load, 48C or so idle

28C case temp

 

[THUGSROOK]

Originally posted by: trueimage
it says 1024mb, channels: dual, performance mode: disabled... what does that mean?

which memory slots are you using?
use slots 1+3 (not 2+4)

 

[THUGSROOK]

oh yea ~ duh!

i forgot you are using an IS7....
try nbs667 1:1 to regain PAT enabled.

 

[trueimage]

will that work with 180fsb??

so much stuff

 

[trueimage]

ok yeah it worked, pat enabled...

now, what about lowering my timings if i'm gonna be running 250mhz ram at 180mhz?

and you said at default voltage it ran 3240 right? any real change running it one higher? or should i lower it back to the lowest setting

 

[trueimage]

ok now for some reason cpu-z is telling me my ram is at 5:4 and 144mhz

although i've rebooted several times and checked, its 1:1 PSB667 and timings are manually set to their spec 3-4-4-8

weird.

 

[THUGSROOK]

cpuz cannot correctly identify nbs667 ~ ignore cpuz.

 

[THUGSROOK]

Originally posted by: trueimage
ok yeah it worked, pat enabled...

now, what about lowering my timings if i'm gonna be running 250mhz ram at 180mhz?

and you said at default voltage it ran 3240 right? any real change running it one higher? or should i lower it back to the lowest setting

those sorta things are upto you.
you may wanna just run nbs533 4:5 as far as it can go ~ or stay with nbs667 1:1 to go farther.
its upto you to benchmark/test them and decide.

 

[trueimage]

Originally posted by: THUGSROOK
those sorta things are upto you.
you may wanna just run nbs533 4:5 as far as it can go ~ or stay with nbs667 1:1 to go farther.
its upto you to benchmark/test them and decide.

What do those settings actually mean then... i guess thats my question?


PS - just tried psb533 4:5 and it wouldnt post, so i guess thats out of the question.

am i losing out cuz i cant use psb800 with pat enabled?

 

[THUGSROOK]

NBS controls the northbridge latency.
you are not losing out by running nbs667 ~ prescott cannot take full advantage of nbs800 anyway, so dont worry about that.
if you were using an 800fsb cpu ~ yes youd be losing out big time.

 

[ProfessorFate]

I ran one of these chips on my P4C800-E Deluxe with 2X256 OCZ3700 Gold at:

190FSB, CPU @3420Mhz, DDR @ 2.5-3-3-7, 4:5 ratio running @ 475Mhz.
CPU vcore @1.5v (1.424-1.456v under load). Prime 95 stable. Benchmarks to 197FSB.
Note this with an SP94 and a lot of case ventilation.

Performed pretty well.