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7950GX2 weird things

Last response: in Graphics & Displays
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August 13, 2012 5:09:35 PM

hi
i have old rig:
C2D E6300 @ Abit AB 9 Pro
3GB of ram
7600GT
250 SATA 7.2k RPM HDD
400W Tagan U33 Force II (12 V = 2x20A, 28A Max combined)

Few days back i've bought GF 7950GX2 for bout 15bucks. Salesman told me that it's 100% ok.

I've installed GFX, turn on windows, installed driver (with some complications)...reboted...
Now weird parts begin

After reboot NV Control panel tells my "insufficient power...bla bla"
(PCI-E connector is attached)...AND Win 7 (32bit) tells me Installed RAM 2.5GB, usable 2.0GB - WTF :o 

Swapped back to my 7600GT and now again i have 3GB RAM...

First question: is really Tagan too weak to power this GFX (NV recommends 27A on 12V rail, i have 28 :p )
Second: What the hell is going on with my system ram???

Oh...and third question: does this GFX have some kind of FAN regulation? It's 'little' noisy

More about : 7950gx2 weird things

a c 177 U Graphics card
August 13, 2012 5:36:00 PM

First: Yes, most likely, as powersupplies get older they lose efficiency and their output drops, its called 'capacitor ageing' and, frankly you'd be pushing the PSU to its lmits with a 7950GX2 even when new.

Second: http://www.techpowerup.com/forums/showthread.php?t=9126...

Third: you could try Rivatuner but the 7950 always was a loud, hot card.

Why are you using it anyway? it's a rare artifact and belongs in a tech museum ;) 
August 13, 2012 5:47:23 PM

thx

I know about aging, but this nv recommendations always were a bit 'over scale'
Remember when years back was using some NV Card on 300W PSU, when NV recommended 350or so.
AND my PSU have peak power up to 500W

Riva tuner does not work
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August 13, 2012 5:54:57 PM

can't edit

My whole rig belongs to tech museum lol

And question 'bout ram - does any one knows wtf :) 
a c 106 U Graphics card
August 13, 2012 6:11:45 PM

sok_z_zuka said:
thx

I know about aging, but this nv recommendations always were a bit 'over scale'
Remember when years back was using some NV Card on 300W PSU, when NV recommended 350or so.
AND my PSU have peak power up to 500W

Riva tuner does not work



peak power is pointless, for a gpu, you need continuous power, as peak can be generated from a spike in power, but cannot maintain that power constantly.
August 13, 2012 6:19:47 PM

yeah ok...let's say that psu problem is solved - but my PC was stable (gpu slowed down though)

now ram, what can be source of this problems...
a c 291 U Graphics card
August 13, 2012 8:23:28 PM

Coozie gave you a good link explaining where you RAM is going.
August 13, 2012 9:38:40 PM

oh yeah, sorry...missed it.
Ok guys...I think that's all...

Thank you very much :)  pitty though my psu is to weak...
!