All 7900 owners please check something..!

[naelq]

how about the Gainward 7900GT 512MB Golden Sample? (7906-BLISS 7900GT 512MB GS)

homepage

pic (WARNING 56K!)

looks like it's the same as the Xpertvision/sparle caliber.... (i think all of them are produced by palit)
it has only 2 'regular' but they are mint/blue colored! ???!!!!

[ReD.SkY]

hey guys... if i were to break of a capacitor, would i be able to reconnect it with conductive ink and tape?

note: i have already broke it and glues it back on.

btw, it's the one on the same side as the pci-x power plug, but on the opposite corner...

is this actually needed for anything?

[The_NamelessOne]

i think my new 7900gt is dying ...it started artifacting badly in deep freeze...most time s when this happens ...the card is going to die in a few days...i'll rma it again and buy an x1900gt ...

[NightCrawler™]

Someone knows his electronics much better then I do... so here's the thing.. What's the difference between a 524 svp 180/16 cap (purple one) and the PS 548 180/16 cap (green/blue one)
180 stands for 180uF and 16 for 1,6volts....

So far it seems both are build by Sanyo.. but does the number 524/548 stand for it's resistor or is it just a part number.. does the color stand for different materials used or is it something else..?

Edit: On the large Club3D 7900GT image the caps have the numbers A 514 180/16

[K.I.T.T.]

Can someone with a sparkle 7900 GT with the new caps measure the height and diameter of those caps?

http://shop.component-tecknology.co....ducts_id=32118

http://shop.component-tecknology.co....ducts_id=32117

I think one of those capacitors is the right one, but i don't know which one.

[***Deimos***]

hey guys... if i were to break of a capacitor, would i be able to reconnect it with conductive ink and tape?

note: i have already broke it and glues it back on.

btw, it's the one on the same side as the pci-x power plug, but on the opposite corner...

is this actually needed for anything?

LOL..LOL.. OMFG.. ROFL

Someone knows his electronics much better then I do... so here's the thing.. What's the difference between a 524 svp 180/16 cap (purple one) and the PS 548 180/16 cap (green/blue one)
180 stands for 180uF and 16 for 1,6volts....

So far it seems both are build by Sanyo.. but does the number 524/548 stand for it's resistor or is it just a part number.. does the color stand for different materials used or is it something else..?

Edit: On the large Club3D 7900GT image the caps have the numbers A 514 180/16

No
read: http://www.secc.co.jp/pdf/2005/oscon/e/e54.pdf
http://www.saga-sanyo.co.jp/oscon/cg...ode.cgi?id=SVP

524 svp 180/16 cap = (either one, depending on dimensions)
16SVP180MX 16 180 30 3020 0.12 576
16SVP180M 16 180 20 3640 0.15 576
524 is the lot code, SVP is the series, 180 is the capacitance in uF, 16 is the volts in V.

Additionally from the datasheet we find its either 20/30 mOhm ESR, high 3-3.6A ripple current. Similar to Ron of transister, the ESR is important because its how much energy in the circuit will be lost as heat, and thus you want low ESR. The high ripple current allows the capacitor to handle large surges of power needed, particularly as there are large spikes in discharge like when row refresh of memory. Bigger is better.

PS 548 180/16 cap
Are you certain it is Sanyo. They have no "PS" series, although they do have "SP".

[K.I.T.T.]

LOL..LOL.. OMFG.. ROFL



No
read: http://www.secc.co.jp/pdf/2005/oscon/e/e54.pdf
http://www.saga-sanyo.co.jp/oscon/cg...ode.cgi?id=SVP

524 svp 180/16 cap = (either one, depending on dimensions)
16SVP180MX 16 180 30 3020 0.12 576
16SVP180M 16 180 20 3640 0.15 576
524 is the lot code, SVP is the series, 180 is the capacitance in uF, 16 is the volts in V.

Additionally from the datasheet we find its either 20/30 mOhm ESR, high 3-3.6A ripple current. Similar to Ron of transister, the ESR is important because its how much energy in the circuit will be lost as heat, and thus you want low ESR. The high ripple current allows the capacitor to handle large surges of power needed, particularly as there are large spikes in discharge like when row refresh of memory. Bigger is better.

PS 548 180/16 cap
Are you certain it is Sanyo. They have no "PS" series, although they do have "SP".

so will any of the capacitors i suggested above work?

[jdam]

i ordered a xfx 7900gt (470/1370 version) yesterday before i read all this obviously. Should arrive monday. Let's see if they fixed the problem

[arisythila]

I'm going to give up on this crap.. today the lockups and artifacts started again..
nVidia can shove their 7900 cards up their ass. I'm going back to ATI

Thats kind of funny, because the BBATI X1900XTX I have, makes the same noise in 3dmark05, so I got a 7950GX2 to replace it.. I couldnt have been happier.

~Mike

[Praxis1452]

Thats kind of funny, because the BBATI X1900XTX I have, makes the same noise in 3dmark05, so I got a 7950GX2 to replace it.. I couldnt have been happier.

~Mike

My X1600 pro makes the noise I'm almost damn sure. does it in 2d 2. FPs related. Gah wanna rma but I threw away my Anti-Static bag so I'm stuck heh.


I thought of switching to nvidia but I guess they make the same noise...

[xenium]

my 7900gtx makes no such noise, although my evga 7900gt didnt do it either, but it still got VERY hot around that area you guys are talking about. my first 7900gt was actually RMAed so that coulde been the problem with the first 7900gt I got from evga...

[ReD.SkY]

yah... i guess the way i reattached it mustve worked then lol

[STEvil]

Guys, the noise does not necessarily mean there is an issue. Many different points can emit the same noise even.

[***Deimos***]

This one looks to be better (higher ripple current, and lower ESR... but 2000h lifetime):

From £2.26
CAPACITOR
180UF 16V
Ext. Width:8.3mm
Resistance, ESR:22mR
Quantity, reel:400
Ext. Depth:8.3mm
SMD:1
Case/Package:E12
ØDia body:8mm
Length / Height, external:7mm
Time, operating life:2000h
Current, ripple AC:3480mA

I'm no electronics expert, but such "large" (relatively) capacitors are typically used to filter out high frequency noise, for voltage smoothing. But, before making any modifications is always best to know for sure. You need to get datasheets on the voltage controlers, and surrounding components, especially inductors (coils of wire, or big flat boxes) and power transistors (SOP 8pin package, or the ones with pins on one side only). 180uF seems too large for compensation network, feedback or parasitic capacitors...

Judging by the fact that with extreme cooling, some folks are able to overclock such high-end cars well into double digits %, you'd think they did a remarkable job on the power system. Almost always the problem is elsewhere... they usually design it very good.

Any PCB electronics designers around here to shed some light?

[K.I.T.T.]

Hey guys, I ordered a new 7900GT which came today.

Inno3D, and it has purple capacitors

[BigDov]

So what I'm understanding here is, since mine's got minty green caps, it's going to die on me one of these days?

[andre X_X]

hopefully not, some mint/blue caps cards are doing well.... luck is also important...
i have green caps, and the only problems i have is 3dmark03... my speed @ 1.55v run flawlessly on 01/05/06 over a week but on 03 i have to lower the speed so low... games running fine.. arround a month nothing happened..

[Reinvented]

If it's based on the premise that minty green/blue caps are bad, and will lead to card failure, chalk me up on there too! Lots of dead cards here

[jdam]

i got mine yesterday. All is fine for me. I got a black pcb xfx. and all is going great. The thingies that are pointed out to get extremely hot, don't really get that hot on my card. i can touch them easy (they feel warm but not hot) Also card is doing 520/750 without any problem (i bought the 470/660 version) No artifacts after several hours of oblivion and 3dmark03 testing.

this one to be exect

[K.I.T.T.]

My card wont clock for though. Getting rid of it

[jdam]

My card wont clock for though. Getting rid of it

how much are you getting out of it?

i stopped at 520/750 for a while to test later on. so far so good.

[K.I.T.T.]

stuck at 550/790. Was hoping for more.

[naelq]

any new guys? to GT or not to GT?

[ReD.SkY]

to GT for sure

[naelq]

in terms of this annoying artifacting symptom?