7950GX2 Spaced / Dual VF900's 56k

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10-18-2006, 07:24 PM
xpsentity

7950GX2 Spaced / Dual VF900's *56k*

Picked up (2) VF900's last night, got the spacer kit today. The clearances are EXTREMELY tight, I had to half screw the double standoffs to create more space for the thumbscrews to clear the fan on the upper card. I took a ton of pics, but my cam wasn't focusing correctly so most turned out horrid. I salvaged what I could. On with the pics! :D

http://img154.imageshack.us/img154/5...rfinishoe1.jpg
http://img177.imageshack.us/img177/19/inhalfcl5.jpg
http://img154.imageshack.us/img154/4...eskdonefb2.jpg
http://img176.imageshack.us/img176/3...eskdoneuw9.jpg
http://img138.imageshack.us/img138/3746/inpcdonexx8.jpg
http://img138.imageshack.us/img138/7...pcdone2jq8.jpg
http://img86.imageshack.us/img86/8044/inpconar8.jpg
http://img120.imageshack.us/img120/6...3dmarkseu0.jpg

10k! Woot! 625/700, stock volts. 6600@ 3.25

<50C load - used to be 80+.

This thing is a freakin MONSTER now, just huge. Idle dropped from 57-60 to 36-40. Also, anyone know how to check both GPU temps? Riva / Control Panel just have one.
10-18-2006, 07:30 PM
Rubiconx3

Nice what kind of overclocks you get with that
10-18-2006, 07:33 PM
xpsentity

Quote:

Originally Posted by Rubiconx3

Nice what kind of overclocks you get with that

It did 625/700 stock cooling/voltage no problems, going to vmod it this weekend. :D
10-18-2006, 07:47 PM
Eastcoasthandle

excellent
nice work there
10-18-2006, 08:04 PM
syne_24

That's pretty nice temps man. Better than I expected :) Is that back of the card still hot as hell now or is it better?
10-18-2006, 08:20 PM
xpsentity

Better, a lot more air flow around the whole area. Also, the delta is like.. 8C now, down from 25-30.
10-18-2006, 10:40 PM
NightCrawler™

I love it!
10-18-2006, 11:55 PM
Pete

Where do you get the spacers form??
10-18-2006, 11:56 PM
BlaqMale

very nice, going with the spacer kit and 2 danger den maze 4 gpu blocks and volt mods myself. trying to extend the length of time i can do high res gaming with this card. hopefully last me till g90 :D e6600 coming too, 10k is mine :D
10-19-2006, 01:08 AM
Mykou

Quote:

Originally Posted by xpsentity

Better, a lot more air flow around the whole area. Also, the delta is like.. 8C now, down from 25-30.

very nice job ! keep hard working

:toast:
10-19-2006, 06:55 AM
Got Chow

Yikes, that's huge! I'll probably WC but it's good to see some pics of this with the spacer installed. So it looks like the spacer kit puts the top card exactly 1 PCI slot higher?

I think Petra's has the spacer kit, think I saw it on there last night.
10-19-2006, 09:12 AM
Pete

Indeed it is over @ his and is only $20 bucks, what a deal!!!
10-19-2006, 01:41 PM
Nanometer

I like it! Excellent work there. Though is that your max mem frequency? I can get 800MHz on stock volts and stock cooling(mind you that I have several fans pushing and pulling air out of the cars in addition). Though it may very well be a timming difference. Ditch those ugly blue heatsinks and get some Monster BGA copper sinks or the OCZ copper sinks. They work better and look awesome. :D

Once again it looks great!

Hey! Wait a second, do you really think that small Switech heatsink is enoguh to cool the PCI Bridge chip? How hot does it get? :-X
10-19-2006, 02:12 PM
xpsentity

Quote:

Originally Posted by Nanometer

I like it! Excellent work there. Though is that your max mem frequency? I can get 800MHz on stock volts and stock cooling(mind you that I have several fans pushing and pulling air out of the cars in addition). Though it may very well be a timming difference.

Haven't pushed further yet, going for broke when I get home from work. ;)

Quote:

Originally Posted by Nanometer

Ditch those ugly blue heatsinks and get some Monster BGA copper sinks or the OCZ copper sinks. They work better and look awesome. :D

Going to replace them with some big ol copper ones like you said, soon as Fry's gets stock again. :D

Quote:

Originally Posted by Nanometer

Hey! Wait a second, do you really think that small Switech heatsink is enoguh to cool the PCI Bridge chip? How hot does it get? :-X

No idea, I've had 2-3 hours with the PC since the mod. Beer, women, work, what can I say. :toast:

I was a bit worried about that, but what else can I do. Going to check it out when I get home hopefully, see if I can score some burns. Anyway, it may have more space now, but not that much space. Thoughts?
10-19-2006, 03:41 PM
eXa

i imagine putting a silent 80mm or 92mm fan on the end of the card(s) should help a bit to, especially on the cramped one.
10-19-2006, 03:52 PM
lawrywild

sweet :D
10-19-2006, 04:05 PM
b1lk1

Excellent to know that this will work. I have a GX2 coming and this is a must do mod. Nice job and thanks for being the first (that I've seen) to do this! Simply marvelous!
10-19-2006, 04:10 PM
phelan1777

nice,

even better is that is in a STACKER!!!!!! :woot:

Well now we can use normal water blocks!!!!
10-19-2006, 10:14 PM
vengance_01

Great job. I really want one of those 7950's. Here me hoping the G80 will lower the price of the 7950 cards:D
10-19-2006, 10:54 PM
Nanometer

I'm selling mine before the prices drop. :D
10-21-2006, 06:27 AM
GrimReaper

good job there
10-21-2006, 02:19 PM
Nanometer

Will you push these to the max already with stock volts? :D hehe I want to see some runs before my card is gone!
10-21-2006, 05:17 PM
xpsentity

625 / 750 stable, stock volts. Numbers could be better, 6600@ 3.24 :slapass:

http://img83.imageshack.us/img83/1255/10100jb5.jpg
10-22-2006, 08:48 PM
Nanometer

Very nice. :D I wonder what is more effective, more Core speed or more DDR speed(for the cards).
10-24-2006, 12:33 AM
Demo

Quote:

Originally Posted by Nanometer

Very nice. :D I wonder what is more effective, more Core speed or more DDR speed(for the cards).

its a 1:2 (core:mem) gain.
10-24-2006, 09:23 AM
xpsentity

To iStep: The guy that pm'ed me;

You have your PM's off. You can get it from,

http://www.petrastechshop.com

They will ship anywhere. Good luck.
10-24-2006, 10:39 AM
Brahmzy

WOW! Killer mod. This is exactly why I haveen't picked up a 7950GX2 - noise and no OCs.

Not a problem anymore! WOOT!

Except now, I think I'll just get G80.
10-27-2006, 10:02 AM
Nazu

Looks very clean and nice :up:
10-29-2006, 12:58 PM
Lt_JWS

Anyone know if the VF700's will work??? I hope so i just ordered two lol
11-03-2006, 05:49 AM
yury2808

XPSentity: "I had to half screw the double standoffs to create more space for the thumbscrews to clear the fan on the upper card" what you mean by that ?

Zalman's screws were too long on the backside of the upper card so they touched the next Zalman's fins ? or what ? can u please make some more photoz :)

ps. just ordered that "spacer"...
11-03-2006, 07:46 AM
xpsentity

The thumbscrews will touch the inner fan with everything 'tight'. Also, make sure the orientation on the VF900's is facing "up", towards the outside of the case, otherwise you won't be able to drop the card in any slots, they will hit caps and whatnot.

If you take the standoffs and create a gap in the middle where they attach to each other by unscrewing them just a bit, you'll get enough clearance. It's DAMN close though.

No problems so far, still running exceptionally well.
11-03-2006, 08:14 PM
WoL-Shiver

any idea if mc14s would fit under the vf900? please let me know what alternative you use to the zalmans.

also what part of the vf900 is the up?
11-03-2006, 09:26 PM
xpsentity

Not sure about the ramsinks, but it *looks* like they'll fit.

You'll see how the Vf900 needs to be. It will fit any direction, but it becomes obvious which way it needs to be.
11-04-2006, 03:02 AM
yury2808

xpsentity: "The thumbscrews will touch the inner fan with everything 'tight'."

why not just cut off half of these thumbscrews ? I did it once had the VF900 in P5B Deluxe - the lower one were right over the couple of capacitors...
11-04-2006, 11:25 AM
xpsentity

Yeah I thought about that, but I don't have the tools to cut them.
11-05-2006, 01:13 PM
Leeghoofd

http://users.pandora.be/OAP/everest.JPG

Grab a copy of Everest home ( must be over version 3) to read out dual cores same readings as coretemp (so fine for me) and also reads our the dual GPU monster ...

Have you tried with the stock coolers ?
I'm trying to grab a version of the swiftech here in Belgium, not to Oc it, just to keep it cooler and enhance it's longitivity ... but indeed the ram is designed to run at 1400mhz so maybe give it a try if I can get it here ...
11-06-2006, 08:07 PM
WoL-Shiver

try it out!

give it a try!

ive got mine running @ 600/775 w/o a hitch, except one, and thats without the spacer of the vf's....

only hitch is in farcry eventvwr.msc shows the nv driver lowering its clocks cause it got too hot.

if anyone tries the mc14s, let me know
11-08-2006, 05:15 AM
Lt_JWS

VF700-Cu LED's Fit... FYI :D
11-08-2006, 05:29 PM
oshox

You know, those pics looked oddly familiar...
11-08-2006, 05:34 PM
Luis_GT

Well, I got meself the spacer with a couple of Vf700cu (25 bucks each was hard to deny) :p

Now all I need is to do the vmod as my card doesn't go above 580mhz.
11-09-2006, 08:28 AM
xpsentity

Quote:

Originally Posted by oshox

You know, those pics looked oddly familiar...

Hehehe, who knows? :cool:
11-14-2006, 10:53 PM
WoL-Shiver

me again, wondering what you replaced your zalman mem sinks with, if at all or what your going to.

also, what vmods did you do? 1.5 or 1.55? and memory? i was figuring youd get higher clocks! also, why benchies only? lol
11-15-2006, 10:48 AM
yury2808

got spacer and one extra VF900 (had one before) - fortunately, new VF900 came with plastic thumbscrews, so it was easy to cut them :)

first head/second head temps are:

idle: 43/50, used to be 55/63
load: 55/64, was around 70/83

ps. all fans in system at lowest speed all time.

very nice drop, I might say !
11-15-2006, 12:57 PM
eXa

put a silent fan in the end of the card(s), it should give u even better temps, atleast @ the inner one!
11-15-2006, 10:35 PM
WoL-Shiver

yuri, why did you have to cut the thumb screws? also, did you use zalmans mem sinks? increase your mem oc at all?
11-16-2006, 08:05 AM
yury2808

eXa: i have one 120mm fan nearby - it runs @ ~300 rpm (trying to keep system very, very quiet) no real need to lower temp even more, I guess :)

WoL-Shiver: I cut the thumbscrews just because of same problems as OP had: they are too big to fit after installing spacer - "inner" zalman fins are right against these screws. cutting about half of the screw solved the problem for one pair, and second pair was little-bit adjusted as well too - cutted ~20% of "side" part of them.

memsinks: yes, I use Zalmans, did not tried to o/c card after spacer install, will try but wonnt go extreme (doh!), 'cause I dont have warranty for this card :)

ps. w/out spacer/sinks I did about 560/700 stable (gpu/mem), but it was HOT. btw, memory is 1.4ns on this one, I thought they have to be 1.1, but not sure... anyways, it's more than enough to have GX2 even at stock clocks until second wave of G80 come ...
11-17-2006, 08:50 PM
WoL-Shiver

still dont get it. the op only said something about the card standoffs...

oh wait i think i get it. instead of not completely using the screw standoffs, you cut the thumb screws? i see.

care to post any pics if you can, waiting for my spacer.

also, did you find your mem chip specs by reading them off them, or on the net?

thanks guys. making my first thread stand here at XS alot easier for me

regards, WoL
11-22-2006, 01:16 AM
WoL-Shiver

bump for a hand :)

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7950GX2 Spaced / Dual VF900's *56k*

7950GX2 Spaced / Dual VF900's 56k