Killed an 8400GS?

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10-27-2010, 09:42 PM
Loser777

Killed an 8400GS?

After my 9800GX2 sort of kicked the bucket I had to switch to my backup 8400GS (free from Black Friday yay). Obviously losing 90% of the performance I used to have is a large jump for me, so I decided to do a pencil mod. I got the resistor down to 535ohms, which is somewhat near the limit at which the card would run (~510ohms). I initially got the card running at 820MHz Core, but after further testing I found it unstable. After a few days later I backed it down to 650MHz (567 is stock)... and it crashed again today. I undid the mod and reset all clocks to stock and the card is still somewhat unstable. It'll get through 3D artifact tests just fine, but it will artifact/crash in 2D games like Osu! after extensive play.

Is it possible to degrade an 8400GS this much? I've only been running it this way for a week or so, and none of the voltage regulators on the card have gotten remotely hot, even during full load.
10-27-2010, 09:57 PM
STEvil

You cant just pick an ohm load and go, you need to monitor your voltages.

That said I ran my Asus 8400GS up to 3.0v on air for a very short period of time and it didnt die... until a few months later. It ran regularly around 1.6v during the 8400GS benchmarking competition iirc. Thread should still be around I think.
10-27-2010, 11:53 PM
zanzabar

those chips desolder themselves so u most likely killed it since they cannot use more power or u will destroy the already over ran power points to the gpu
10-28-2010, 01:39 AM
STEvil

we never ran into desoldering issues in the 8400GS competition.
10-28-2010, 11:31 AM
zanzabar

Quote:

Originally Posted by STEvil

we never ran into desoldering issues in the 8400GS competition.

never mind then i figured that it would do the same as g84 and g98 chips in laptops and the latter cards. is it not rohs complaint.
10-28-2010, 05:14 PM
STEvil

the problem in the laptops is not desoldering.

The problem in the laptops is the solder balls "breaking" and causing a poor connection. They break because the lack of lead in the solder makes them less resistant to flexing of the chassis and also "cold welds".

Only laptops ever had this issue that i'm aware of.
10-28-2010, 05:21 PM
CrazyNutz

Good job:up: All 8400gs' should be destroyed:rofl:
10-28-2010, 11:13 PM
zanzabar

Quote:

Originally Posted by STEvil

the problem in the laptops is not desoldering.

The problem in the laptops is the solder balls "breaking" and causing a poor connection. They break because the lack of lead in the solder makes them less resistant to flexing of the chassis and also "cold welds".

Only laptops ever had this issue that i'm aware of.

the desktop 8500 and some 8600 and the 9400 and 9500 cards had that
10-30-2010, 11:01 AM
Loser777

Well it seems that the card isn't artifacting or crashing anymore... I don't understand why it wouldn't work well when I first brought it back to stock clocks.

EDIT: I spoke too soon... just soft-crashed again (display driver recovered)... looks like I will need to find me a cheap replacement graphics card to hold me over until I do a new build.
10-30-2010, 09:46 PM
STEvil

display driver crash might not be the card