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OC'ing 4200+... can't get beyond 2.35ghz

post #1 of 11
Thread Starter 
Hokkai, specs first:

Windows XP Media Centre Edition 2005
Radeon x1900xt 512mb
AMD 64 x2 4200+ socket 939 2.2ghz
GeIL 2Gb 400MHz CAS 2.5-4-4-8 DDR Memory Kit (2 x 1Gb 400MHz DDR RAM)
300gb + 320gb seagate sata-II hdd's
Gigabyte GA-K8NF-9 mobo
Case cooling: 3x12cm fans (2 out, 1 in)... dunno about my cpu cooling

Trying to get my cpu to AT LEAST 2.4ghz... but if I go above 214mhz FSB (no matter what my other settings are), it won't go into POST or beyond.
Currently, I've got it at 214mhz FSB, 4x HT, 11x the other thing, 1T command rate, 1.35 vcore. This totals out to around 2355mhz. Seems to be stable, running a short test now, I'll probably do a longer one later. Temperatures are around 28 celcius idle, 43 at 100% load, which is pretty good I think? So it doesn't seem to be a cooling issue.
What am I doing wrong? Surely I should be able to get to 2.4 easy...

Any help is appreciated
post #2 of 11
Have you put a bigger divider on the RAM? The ram might not be able to handle that speed if you dont put a bigger divider or loosen the timings, especially at 1T. Try going 2T and setting max mem speed to the lowest setting to find out what your max htt and cpu clock is. Oh btw its not FSB on AMD systems, thats an intel thing. For AMD, that external clock is called HTT.

If that doesn't help you might need to up your Northbridge chipset voltage a notch, or maybe some more vcore.
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post #3 of 11
Thread Starter 
Tried it at 2:1, but I'm not sure about the max speed... all I can find is refresh rate, which is by default at 200mhz, and I can drop it to 166, 133 and 100 I think. Tried that at 100, didn't make a difference.
Dunno how to loosen the timings, as there are a whole lotta options...
CAS# Latency = 3
RAS# to CAS# Delay = 4
RAS# Precharge = 4
Cycle Time (Tras) = 8
Bank Cycle Time (Trc) = 11
And a few more... which ones should I be changing?

Thanks
post #4 of 11
Quote:
Originally Posted by Don_Karnia
Tried it at 2:1, but I'm not sure about the max speed... all I can find is refresh rate, which is by default at 200mhz, and I can drop it to 166, 133 and 100 I think. Tried that at 100, didn't make a difference.
Dunno how to loosen the timings, as there are a whole lotta options...
CAS# Latency = 3
RAS# to CAS# Delay = 4
RAS# Precharge = 4
Cycle Time (Tras) = 8
Bank Cycle Time (Trc) = 11
And a few more... which ones should I be changing?

Thanks
None, if you set your ram lower (133) u don't have to change your timings until you found the perfect setup. I think you need more vcore.
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post #5 of 11
Thread Starter 
I'm afraid to go beyond 1.5 vcore... so it is the refresh rate I should be changing to 133?
post #6 of 11
Quote:
Originally Posted by Don_Karnia
I'm afraid to go beyond 1.5 vcore... so it is the refresh rate I should be changing to 133?
Your memory settings in the bios. It will then clock up from 133 instead of 200. 215 FSB = 430 DDR, maybe something your memory can't handle.
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Crucial MX300 525GB SSD, Seagate 3TB, Samsung 1TB Noctua NH-U14S Windows 10 Pro 64-bit Samsung U24E590D UHD 
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post #7 of 11
Thread Starter 
Ah hokkai. Turns out it was my HT multiplier being at 4 that it didn't like; changed it to 3 and I can go to 455mhz (testing max HTT). Now testing CPU max.
Would 10x260 be better or worse than... say... 8x325 (I'm aiming for 2.6ghz now)?

EDIT: Testing stability at 10x260. Idle temp around 29c... Two instances of Prime 95 torture test get it up to a max of 58c. Good? Bad?
On cpu-z it says my RAM frequency is 186.5mhz... is this slow?

EDIT2: Looking at that OC Optimizer by Gogar, it seems 8x325 would be better, so I'ma switch to that now.
post #8 of 11
Mine is set at:

230x11 = 2530 (which is what I have now)
Ram = 1:1, 230 (I have 4x512mb sticks)
Everything else I left alone. I primed 95 for about an hour and I figured it was good enough.

45-46c load with my Tower112 =)
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post #9 of 11
325x8 would be better, the more HTT the more bandwidth the better. I ran my 4200 all the way up to 2750 stable on stock voltage. I'm currently 271x11 with 1.43 vcore! I got a Toledo core, I'm assuming you got a Manchester. I got mine up to 3.1 but temps were a little warm for my liking. I'm getting either a Big Typhoon or a custom water setup soon.
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post #10 of 11
Thread Starter 
Hmm, 10-15 minutes of playing Oblivion, and it froze at a room transition... ctrl-alt-del and everything was massive and horribly coloured - probably 640x480 and 256 colours or something... there was a message about my video card software failing, and I had to restart. All was well afterwards, but I don't think it's wise to keep it at 2.6... Down to 2.4, played Oblivion for an hour or so, everything seems fine, I'll start Priming it.
And yup it's a manchester.
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