sis645dx or Epox 4BDA i845D!!! come help....

Duvie

Elite Member
Feb 5, 2001
16,215
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OK...I need a replacement for my Asus p4s333 board while I RMA it...I toasted a resistor trying to oc my p4 1.8@2.61ghz with a +1.83v....long story, but it is the board...

I am thinking about getting one of the 2 boards and then with the rma board just sell it and recoup some of the cost for this board....


Sis645dx...

Pros:

I will be with the latest p4b processor support....
I will have 400mhz ddr support at 100fsb w 1:2 and 133fsb with 4:6...
ATA133 support...

I basically want to keep the chip under 1.7v and I successfully tested my 1.8@2.45ghz (136fsb) at 1.7v...therefore at 136fsb I can run the 4:6 mem ratio and my memory will be at 408mhz ddr and I am running that now with 2.7v mod (ofcourse at a much lower 122fsb)....

Cons:

Sis's slightly worse agp and hardrive performance...most is neglible...
1.7v adjustments on board and then you have to use voltage booster which I feel is a culprit in my situation...


i845D Epox 4BDA

Pros (anything not already listed as con in above)

can keep all system in pci/agp spec, thouhg at 136fsb it will be a wash...
likely better stability back at higher 1.8v through bios option...I ran successfully tested 1.8@2.52ghz @ 1.775v...more raw cpu power...

Cons

Even if I could achieve 2.52ghz on the board with 1.775v the memory would only be running at 373mhz ddr


SO!!!


Go with the sis chipset and get the mem bandwidth albeit potentially 70mhz slower???

Or

Go with INtel chipset and get the raw power with lower bandwidth and all the other advantages of the intel chipset????


 

FishTankX

Platinum Member
Oct 6, 2001
2,738
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Neither. Sell all your DDR and use a TH7II raid and the beta bios to get to 2.0V glory! Hehehehe..

No seriously....
Now, Duvie, despite the fact that you said it yourself, I don't know Sh^t (I love giving you a hard time..) if you can get some conductive lacquor/epoxy you can boost the P4's default voltage! WOW!!

..How would you like your P4's *default* voltage to be 1.75 volts?

...despite the fact that i'm an idiot, Duvie, I know some tricks. If you want me to, I can show you a diagram later detailing the process of shorting out such and such pins to get such and such default voltage. It just takes a dab of laquor and knowledge of which pins to short to get you rockin at such and such voltage. Intrested..?

If so, publicly recant your statment.. :cool:

Oh, and if you already know how, and i'm just being an @$$, I suggest the Epox i845 board over the SiS645DX.. If you're goal is really freakily high bandwidth, sell your 1.8A and get a 1.6A and stuff it in the epox board and try to hit 150FSB/400MHZ DDR.
 

Mem

Lifer
Apr 23, 2000
21,476
13
81
Of those two I would go with the i845D Epox 4BDA,yes I do like Epox boards which are excellent for stability plus you`ve the Intel chipset.


:)
 

oldfart

Lifer
Dec 2, 1999
10,207
0
0
You know my opinion already. BTW, Epox goes to 1.85 Vcore, not 1.8 (my mistake). Yeah, its too bad you have the 1.8A instead of the 1.6A. You wont be able to get as high a mem BW with the lower FSB. I've posted this already, but for others, HERE are SiSoft benches of my Epox/2.4GHz/DDR400 setup.

I've seen you post about the SiS HD performance. How much worse is it? Worse in what regard? STR, burst, CPU util?
 

FishTankX

Platinum Member
Oct 6, 2001
2,738
0
0
Duvie:I apologize if that came off as offensive. It was meant to be more funny....

Oldfart:Now, this is uber-ironic.. but the champion of PCI/IDE performance is actually ALi... if you could pair up a VIA northbridge and an ALi south bridge we'd have some sort of uber-chipset. ;)

 

Bozo Galora

Diamond Member
Oct 28, 1999
7,271
0
0

i have the same indecision

especially with the 648 sis in late May with AGP 8X and USB 2.0

i'm leaning towards 645DX but its a mighty short lived chipset

I should wait, but i'm getting nervous seeing all these big numbers