Looking for new GPU due to mine possibly dying.

LittleTimmy

Honorable
Jan 31, 2014
11
0
10,510
APPROXIMATE PURCHASE DATE: I have no approximate date. BUDGET RANGE: 400-700 Pesos.

USAGE FROM MOST TO LEAST IMPORTANT: Gaming. It has to play Fallout 3 GOTY on med-high settings

CURRENT GPU AND POWER SUPPLY:
XFX Nvidia GeForce 8600GT 512GB DDR2 RAM
Generic Eurocase CL-500

OTHER RELEVANT SYSTEM SPECS:
Motherboard: M2N68-AM SE
CPU: AMD Athlon Dual-Core 7750 BE @ stock speed (2.70) with stock cooling.
HDD: Samsung HD250HJ SATA-II running at 7200 RPM, 3,5"
RAM: 1 1GB DDR2 stick, 1 2GB DDR2 stick, both running at 800mhz

PREFERRED WEBSITE(S) FOR PARTS: mercadolibre.com (Foreign products are placed on hold until our president lifts the ban)


COUNTRY OF ORIGIN: Argentina

PARTS PREFERENCES: I really, really like anything AMD/ATI related (Radeon HD series) because, afaik, they offer the most cost/efficiency.

OVERCLOCKING: No
SLI OR CROSSFIRE: No

MONITOR RESOLUTION: 1440*900

ADDITIONAL COMMENTS: Must run Assassin's Creed 2 at a stable rate, even if it means playing on low. It would be nice (but it's not necessary) if it could play Fallout 3 on med-high at 60fps.

I was looking at a Radeon HD 5670, or a 47xx or 48xx (with a new PSU for the last two).

I decided to change it after my PC started shutting down by itself. My GPU is five years old, and since three years ago, it has been withstanding extreme heat (It's normal for the place I live in to hit 40ºC on summer), extreme dust (the wallpaint was literally crumbling all around the house, that changed a month and a half ago, got full new plaster and paint) and constant energy cuts (It's normal for the lights to go out every night during the first three weeks of summer due to overheating of the central). Electricity also flashes before it is restored every time it cuts (with flashing, I mean it goes on and off about 4 times in a second, and the fifth time it stays on).

It started shutting down when my mom decided it would be a good idea to put the PC on the hottest corner of the house with the casing openings pointed at the wall at less than a foot of distance. It has no case fans, and everything is stock cooled. Also, the room has no AC of it's own (we have to turn the AC of the next room on and leave the door opened)

It shuts down after 20-30 minutes of med-high stress (Fallout 3, LoL). I isolated the problem at the GPU because the PC didn't shut down after 45 mins of the CPU stress test (CoreTemp showed 57ºC at maximum temp), but the PC shut down exactly the same way that it usually does when playing games after 25-30 minutes of FurMark's burn-in test.

Any thoughts?