And Without Further Delay.... 2.4C IC7-G PC3500 Winbond CH-5

[markodude]

Hey Rio71 you getting an Abit IS7-G or something Dual Channel for that mobile chip?
I have an i865 Intel board waiting on me (genuine Intel ;-)) but I dont know if the P4M 2.2 will work in it, never tried in a real Intel board, hoping it will detect it as a 2.4c (12x multi)
The IS7-G and 2x Twinmos PC3700 with the mobile chip is my next move, then get a real C chip and pop it in later...
sorry for the thread hijack people

 

[theotherphil]

yes, correctly.
but theotherphil has different memory bandwidth at even 200ddr. (similar to my 500ddr)
only changing with cpu-speed.
this can't be.
same memory-fsb = same memory bandwidth

The results I get are:

200fsb / 200mem (1:1) - ~4500/4500 (2,5,2,2)
250fsb / 200mem (5:4) - ~5300/5300 (2,5,2,2)
300fsb / 200mem (3:2) - ~5650/5650 (2.5,7,3,2) <- relaxed timings...won't post at 2,5,2,2!


Don't forget though that the 875P chipset has PAT that supposedly adjusts latencies on the fly etc for better performance. It just makes manually tweaking that more funky

 

[Kunal]

Ergh, had a problem with windows last night, some files got corrupted, havn't had time to format until today...

OK, bb in a little while, aiming for 230FSB on 1:1 - I've left performance mode on disabled, as it seems to give me a lot of bios errors no mater what the RAM timings or voltage are. Hopefully I can figure out what the problem is here and re-activate it later.

 

[Kunal]

OK, 225/450 @ 2.5-7-3-3 2.6v I can get into Windows, but it's not Prime95 / SuperPi stable.

Winbond Hardware Doctor reports memory as 2.59v and vcore flickering between 1.50 and 1.52 (still undervoltin)

Max I can set RAM voltage to is 2.8v (2.78v actual). I'm gonna reboot at 2.7v and see if Prime runs.

 

[Kunal]

OK, 2.7v DDR. 2.5-7-3-3, things appear to be SuperPi and Prime stable - although Photoshops acting a bit strange... keeps freezing up for 20seconds then coming back to life....

I was watching the voltages while Prime was running.... DDR flickers between 2.66 and 2.70, but here's the wierd thing.... Now at 2.7Ghz CPU, the vcore is reporting LOWER, and is flickering between 1.49-1.50 in Winbond Hardware Doctor.... CPU-Z reports it as 1.488v!!!!



Mem scores are up at least lol.

I'm gonna push it slowly 1mhz at a time, before I'm forced to go 2.8v (Then start to lower timings to 3-7-3-3)

I might bump the vcore up a notch as that just doesnt seem healthy to me.... 1.488 is v low

 

[theotherphil]

The vcore on my IC7G reads a little low also. My vDIMM on the other hand reads 2.83 when set at 2.8v.

 

[Kunal]

Well here it is....



This is as high as I can go I want 250!

Damn voltage restrictions

Time to hit the 5:4 divider!

 

[Kunaak]

wow-P4 2.4 C is kinda slow on the super Pi time.
I just gave a shot at my XP 2100 at default speed. with the same ram timings you show there, 2-3-3-5 and I got 1 minute 3 seconds. so I was 1 second slower.
I thought they were faster then that.

 

[theotherphil]

Try the Prime 95 Benchmark and then you'll see how fast the P4 can be in comparison to the AMD:


Intel(R) Pentium(R) 4 CPU 2.40GHz
CPU speed: 3600.94 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.4, RdtscTiming=1
Best time for 384K FFT length: 9.857 ms.
Best time for 448K FFT length: 11.714 ms.
Best time for 512K FFT length: 13.299 ms.
Best time for 640K FFT length: 16.017 ms.
Best time for 768K FFT length: 19.491 ms.
Best time for 896K FFT length: 23.101 ms.
Best time for 1024K FFT length: 25.903 ms.
Best time for 1280K FFT length: 33.906 ms.
Best time for 1536K FFT length: 41.843 ms.
Best time for 1792K FFT length: 49.760 ms.
Best time for 2048K FFT length: 56.169 ms.

 

[Kunaak]

theres a benchmark for prime 95...

geez a year using it and I never even looked at that.

 

[theotherphil]

theres a benchmark for prime 95...

geez a year using it and I never even looked at that.

LOL...definitely a hardcore DC'er