DFI NF4 SLI-D Official EPUK thread

Thanks for the link Platty mate.

Anandtech reckon that at the same speed VX out performs the TCCD in almost every benchmark.

That is to say if you ran your CPU @ 270x10 with VX running 2-2-2-6

And the TCCD was running @ 300x9 running at 2.5-3-3-7

The VX would perform much quicker at equal speeds, the obvious disadvantage being video encoding where bandwidth counts.

I read somewhere that the CPU does not even have to run as fast if you have the tighter timings with VX to get same perfomance. I think someone said 260x10 with VX was faster than 300x9 with TCCD on the same system.

Nice to hear that others experiences are different.

Keep the information coming in guys.

Cheers

Mav
 
maverik-sg1 said:
Anandtech reckon that at the same speed VX out performs the TCCD in almost every benchmark.

That is to say if you ran your CPU @ 270x10 with VX running 2-2-2-6

And the TCCD was running @ 300x9 running at 2.5-3-3-7

The VX would perform much quicker at equal speeds, the obvious disadvantage being video encoding where bandwidth counts.

I read somewhere that the CPU does not even have to run as fast if you have the tighter timings with VX to get same perfomance. I think someone said 260x10 with VX was faster than 300x9 with TCCD on the same system.

Mav
Click to expand...

Anandtec are morons they benched the OCZ and the VX against each other at the same FSB and claimed as you say "Anandtech reckon that at the same speed VX out performs the TCCD in almost every benchmark". Ofcourse it does, the VX has tighter timings so is bound to win. The actual amx memory bandwidth benchmark, where TCCD is running at a higher FSB than VX's max went unnoticed by them, and TCCD had the lead. The only fair comparison would be to bench them all at the max FSB both modules could achieve, not at fixed FSBs.
 
Thats a fair comment by Mistadave and I have to agree we need a true head to head bench to see which one is the real winner.

Ultimately I guess that would have to be done on an FX CPU where the muliplier can be upped (in the case of the VX) to provide identical CPU clock speeds and two different HTT's.

I fair comparison would be benchies for both at 3ghz

VX would be at 250x12 @ 2-2-2-6 1:1 with CPU

TCCD would be at 300x10 @ 2.5-3-3-7 1:1 with CPU

Both at 1t timings.

Unfortunately, I sold my TCCD LE and got me some BH5 when I traded my Winchester 3500 for FX55 otherwise I'd drop a few benchies in here.

Might be worth posting another thread to see who can take up the challenge.

What benchies can we go for? I suggest superpi 32m? Any other suggestions?

Of course if someone wants to lend me their 300FSB Gskill I'd be happy to test them against BH5 at same CPU clock speed on various benchies :)
 
what is currently considered the best bios for overclocking on the dfi nf4 ultra-d? iv got gskill tccd if that makes any difference to the right bios for me...the one iv got is rubbish and old, but i cant decide on a new one!
 
310P is meant to be good for Gskill, although I got my best results (3 extra HTT mhz) from 201.

326 works well with that BH5, but u have my gskill now so I can't tell u about that one.

331's suck (for my rig anyhow) and since trying them I decided not to use the latest ones until someone else tried em first.

Others on this site with TCCD are really pleased with 310's though - might be your best bet.

Cheers

Mav
 
Any Advice?

Hi folks,

Swapped out my ASUS for this DFI baby:

FX-55 with Chilly1 (-47 to -67 depending on load/time of day/cycle of the moon)

2x 6800 XFX Ultras (only 1 current:) ) - water cooled (DD blocks and sticky on OCZ Ram coolers)

2GB of Corsair TCCD

Its Phil's prototype "Hurricane"

Could do with a little advice on the CPU O/C with the DFI board. I can't get the CPU above 3.2GHz - which sounds very low either by playing with FSB and Multiplier timings. I have managed 249MHz FSB with 2GB of RAM (relatively impressive and a LOT better than the ASUS mobo which only managed 215MHz) with the multiplier still at x13. Even when I pump more power through the CPU I don't even get a post if I sneak above 3.2GHz. I was hoping for higher.

Am I missing a trick or have just got a "not so good chip" or is it a BIOS issue? I am using the last "official BIOS" released in March.

One further thing... will the Innovatek 6800 coolers fit with the SLI slots so close (with or without blue LEDs) on the DFI board? The RAM temps on the Ultra cards get pretty hot before any O/C.

Also getting that POST lockup from cold boot, where it sticks and you have to do a 5 minute cycle to restart the machine - anyone heard of a solution to that?

Frunk
 
What week is your FX mine is week 41 some people have had their week 41's up to 3.5 mine however hits the wall at 3.3 its stable at 3.28 there abouts I think I'm running 298 x 11 well something like that are you using 4 sticks of ram if so try for only 2 it may help your overclock

As for your cold boots mine went away with bios 218 and on now I am using beta bios 414 I think it is
 
fatty said:
What week is your FX mine is week 41 some people have had their week 41's up to 3.5 mine however hits the wall at 3.3 its stable at 3.28 there abouts I think I'm running 298 x 11 well something like that are you using 4 sticks of ram if so try for only 2 it may help your overclock

As for your cold boots mine went away with bios 218 and on now I am using beta bios 414 I think it is
Click to expand...

I will check the week. I do not hit an unstable part of the CPU... its either working or not POSTing - which is why I thought it could be a BIOS issue. Will try your BIOS. is that a TCCD one? Where d'ya get it? Off the Xtreme forum?

If I drop down to less RAM I will get higher speeds - no doubt - which I will do when i want to SQUEEZE benchmarks out of it - but for day to day use 249x13 is good for day to day use. Games REALLY like that extra Gig so real world use tends to find it faster... but lets face it no "real world use" actually requires that sorta power... maybe S.T.A.L.K.E.R. will hurt it!

Thanks for the feedback - at least I am not far behind ya! :)

Frunk
 
Hi,

Mine craps out at 249x13 or 268x12 with SLI 6800GT's at 448/1180, it may well be that you have hit the 'wall', I can 3d bench at 270x12.

My mate scorchio also has a similar set-up and a similar OC.

We are both running 2x512MB od RAM though.

With 2gig of ram 249x13 is not to be sniffed at, in fact it's mighty impressive, The only thing I can think of is that your PSU may be maxxed out - not sure which one you are using, but with that sort of power available to you I would seriously look at the 850 unit that Phil is selling or at least go for the PC&P 510 SLI that Phil offers.

AMD CPU's of the current variety are only guaranteed for dual channel not double dual-channel.

My cold-boot issues went away with BIOS 201, I am using 326 now althogh 414's are supposed to be better for 4 stick of ram.

Using my old PSU I had to pump 1.84v into the CPU to get max overclock, usign the PC&P 510 SLI I can use 1.72v and achieve my best overclock with ease and stability.

Hope this helps.

Cheers

Mav
 
BTW:

NICE RIG MAN :D

Also are you running the ram in 1t or 2t timings?

If it's 2t, how does 2gig of ram compare in say 3dm2001se, 3dm03 and 3dm05 versus 1gig running at 1t?

Mav
 
Watercooling 6800's on DFI MOBO

Frunk,

I am using the non-LED variety of the innovatek blocks and there is a bit of space left - should easily suit LED units if that's your thing.

Cheers

Mav
 
New chipset cooler mmm me wants it bad

dfi_big.jpg


http://www.techpowerup.com/reviews/Mips/DFIFreezer/
biggrin.gif
 
I realise space is at a premium there, but

those are probably the most restrictive blocks I have ever seen !

Anyone thinking about using them do yourself a favour & put them in parallel.

& thats probably the only time i have ever recommended a parallel setup but christ those blocks are gonna cause flow problems in series.
 
I agree, the NF4 mobo has been screaming out for something like this, the good news is that it uses the same fittings I currently have installed :D but you will either need a HP pump such as phils new AQ series or put it in series.

It's certainly going to need some thought if you are using a DD or similar 1/2" set-up.

I for one welcome this product with open arms and now have to think about how to re-set my WC to suit and where/when I can get my grubby hands on one..........Phil, any chance??

One thing I have learned on this site - nothing is impossible ;)

Mav
 
Looks like we need a quad head prom 2 for the sli one for the chipset and yet another for the cpu cmon phil pull it out the barrel

oh yeah an my cpu is happy here

3245.JPG
 
Just built a rig for a mate using this board (and yes I'm very jealous) - we've just installed the second 6600GT and are having difficulties getting them to SLI.

I get the old - remove the non-SLi compatible card warning in the nvidia toolbar when clicking on the sli tab. They are both XFX 6600GT cards - but 1 is rev1 and the other is rev2 - have things really changed so much that they are incompatible - I've flashed both bioses to the latest, same drivers - nothing seems to work (Though the flash **** has them running 4 screens at the moment which is pretty sweet, but not what we were trying to achieve!)
 
Yes,

I had the same issue with XFX6800GT Rev1.1 and Rev2.

The only chance you have of getting these to work together in SLI is to force flash the BIOS of one of the cards to make it the same and the other.

There is a utility available that will do this for you.

SLI Flash Ver2 from www.mvktech.net

I think you can find it in the NVIDIA forums.

If that dont work then you need to offload one or both and buy a pair.

Good luck

Cheers

Mav
 
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