AMD Sempron 140 Overclocking results

[shata]

Ya Crosshair V is excellent board to say the least, I see alot of people using alot more voltage for cpunb and vcore then I do and I can get mine to same speed. Its very good overclocking board I just wish i had better cooling like custom water kit... It just never ends lol This is terrible hobby. =)

 

[rayzr]

Yeah, nearly everyone is learning here. Nobody is perfect, after all.
@shata I'll keep you updated. But how do I contact you? E-mail?

 

[shata]

Just throw message on this thread, Its sempron 140 related so it will work.

 

[PenguinsPal]

This is the best I could do ... http://valid.canardpc.com/show_oc.php?id=2004513

3900 @ 1.52

Did get it to boot @ 4004, but it froze before I could get a Val...

 

[shata]

That's nice overclock, is the 3.9 2hr prime95 stable?

 

[PenguinsPal]

That's nice overclock, is the 3.9 2hr prime95 stable?

Why yes it is

But I will be backing it down to 3.8. I don't like the Vcore that high.

 

[rayzr]

Watz d temp @ 3.9 GHz?

 

[rayzr]

I don't think air-cooling can help...

 

[shata]

I mean don't take my word on it, you break it - its ur fault I don't want to go above 1.52 either but I heard they are ok to 1.55 at very max if you can keep em cold.

 

[shata]

They put out alot of heat at 3.86 even, I didn't test my h100 on sempron but on stock cooling my Max load temp was around 55c. Id imagine load on liquid being 40s.

 

[shata]

Why yes it is

But I will be backing it down to 3.8. I don't like the Vcore that high.

What's your cpunb voltage set at? If you don't mind me asking.

I never changed anything but vcore, I'm thinking that's why I got stuck.

 

[rayzr]

This is my Prime95 test result. Are these times good?
AMD Sempron(tm) 140 Processor
CPU speed: 3363.02 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 1 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 48
L2 TLBS: 512
Prime95 32-bit version 25.11, RdtscTiming=1
Best time for 768K FFT length: 13.789 ms.
Best time for 896K FFT length: 16.501 ms.
Best time for 1024K FFT length: 18.557 ms.
Best time for 1280K FFT length: 23.678 ms.
Best time for 1536K FFT length: 28.071 ms.
Best time for 1792K FFT length: 34.087 ms.
Best time for 2048K FFT length: 38.425 ms.
Best time for 2560K FFT length: 50.075 ms.
Best time for 3072K FFT length: 60.077 ms.
Best time for 3584K FFT length: 72.457 ms.
Best time for 4096K FFT length: 82.470 ms.
Best time for 5120K FFT length: 106.788 ms.
Best time for 6144K FFT length: 131.199 ms.
[Sun Sep 18 12:08:14 2011]
Best time for 7168K FFT length: 165.680 ms.
Best time for 8192K FFT length: 193.634 ms.
Best time for 58 bit trial factors: 3.455 ms.
Best time for 59 bit trial factors: 3.459 ms.
Best time for 60 bit trial factors: 3.466 ms.
Best time for 61 bit trial factors: 3.456 ms.
Best time for 62 bit trial factors: 3.469 ms.
Best time for 63 bit trial factors: 6.385 ms.
Best time for 64 bit trial factors: 6.389 ms.
Best time for 65 bit trial factors: 6.360 ms.
Best time for 66 bit trial factors: 6.303 ms.
Best time for 67 bit trial factors: 6.308 ms.

And by the way, how do you overclock CPU-NB? Mine is @ around 2491 MHz.

 

[shata]

I am not sure on NB overclocking, I never really mess with it. I know cpunb voltage needs voltage increases sometimes for overclocks and getting ram to be stable. U should probably ask someone that knows more about that.

As far as times not sure, I never benched my sempron.

 

[rayzr]

OK...my budget is tight at the moment, so zero chances of new hardware. I'm just trying to squeeze out as much as I can.
AMD FX...

 

[PenguinsPal]

Ambient 24c/idle 32c/ load 48c....

 

[PenguinsPal]

My CPU_NB was set at 1.28...

 

[Gomeler]

These are very fun chips and they scale so well with temperatures. If you have the option they positively scream for dry ice and liquid nitrogen. Interesting seeing you guys push them on the stock cooler though. I'm used to slamming 1.9v+ into them albeit at -190 Celsius So easy to forget there is another world out there on air coolers.

 

[shata]

These are very fun chips and they scale so well with temperatures. If you have the option they positively scream for dry ice and liquid nitrogen. Interesting seeing you guys push them on the stock cooler though. I'm used to slamming 1.9v+ into them albeit at -190 Celsius So easy to forget there is another world out there on air coolers.

1.9v damn... Thats alot. Yeah Reason I did mine is it was temp cpu to get my pc going cause I didnt have money to drop into 1100T at time. But it was fun pushing it to limit without really spending money..lapping cpu and heatsink. If it breaks o well u know.

Wish I could get my hands on some LN.

 

[rayzr]

Yeah, exactly. Why spend money?

 

[Aborlorn]

My $37 Sempron 140 Overclocked to 3.5ghz (and unlocked 2nd core) is faster than my $400 Intel E5530, lol.

Here are my observations using about 4 different Sempron 140 chips and 2 motherboards (Asus Sabertooth 990FX and MSI 890FXA-GD70). Asus Sabertooth 990FX is a very easy board to overclock with and both boards can overclock pretty well.

MSI had problems unlocking 2nd core.

• Sabertooth - ALL 4 chips unlocked 2nd Core to Athlon X2 4400e. The MSI board, only 1 of them unlocked.
  
• Bumped up to 3.1ghz with built in "automatic" overclocker.
  
• Manually setting just the FSB can get you an easy 3.52ghz and everything else stock.
  
• Slight Voltage Tweaking can get you 3.7ghz+ easy. Unstable for me at 3.85ghz without heavy voltage which I didn't want to do.

So in summary, I had a 100% success rate on both unlocking 2nd core and overclocking to 3.52 on all 4 chips on the Sabertooth 990FX.

On the MSI board, I had similar overclocking results but only one of the same 4 Sempron 140 chips unlocked the 2nd core.