Overclock.net › Forums › Graphics Cards › AMD/ATI › 5850[overclock], screen goes black and fan to max
New Posts  All Forums:Forum Nav:

5850[overclock], screen goes black and fan to max

post #1 of 7
Thread Starter 
Heya!

I can't understand my 5850, and to be honest, overclocking since 9800Pro days has changed quite some (when it comes to symptoms and what to do).

So i got a MSI 5850 and try to push its limits.

I tried:

- 850/1000 1149mv, black screen, fan to max, have to reboot manually.
- 800/1100 stock volt, black screen, same as above
- 850/1000 stock volt played BF3 for an hour, then screen went black and came back with loads of small squares (screen looked like a chess board with small tiles) and PC eventually hanged.

I dont get it. Temps are fine, max 52C under gaming (i removed stock cooler, removed the paste, applied a H01 paste, refitted the cooler. Cooler is of the type Twin Frozr II)

When should i increase voltage?
Does my chip (or RAM chips) suck ass?
What did i miss?
post #2 of 7
The small boxes are artifacts meaning it isn't stable. It's odd for it to artifact at stock levels unless its. What programs have you tried to use ?
The Move
(13 items)
 
Son's Rig
(14 items)
 
 
CPUMotherboardGraphicsRAM
i5 750  Gigabyte P55 UD4P rev 1.0 HIS 6850 / SLI GTX 460 Corsair Vengeance DDR3 (2x4gb) 1600mhz  
Hard DriveOptical DriveCoolingOS
250 GB WD x2 Raid 0 ASUS DVD/R Corsair H50 Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG 22' LCD Logitech MK260 CM Silent Pro M600w Lian Li PC 60Plus II 
Mouse
Logitech  
CPUMotherboardGraphicsRAM
Athlon 7750 BE @ 3.2 Asus M3N72-D 9600 GSO G94 512 2x2 PNY XLR8 DDR2 
Hard DriveOptical DriveCoolingOS
WD 200 SATA2 Pioneer Lightscribe Thermaltake R1 Windows 7 Ultimate 
MonitorKeyboardPowerCase
LG 22' Logitech Antec 500W Antec 300 Illusion 
Mouse
Logitech 
  hide details  
Reply
The Move
(13 items)
 
Son's Rig
(14 items)
 
 
CPUMotherboardGraphicsRAM
i5 750  Gigabyte P55 UD4P rev 1.0 HIS 6850 / SLI GTX 460 Corsair Vengeance DDR3 (2x4gb) 1600mhz  
Hard DriveOptical DriveCoolingOS
250 GB WD x2 Raid 0 ASUS DVD/R Corsair H50 Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG 22' LCD Logitech MK260 CM Silent Pro M600w Lian Li PC 60Plus II 
Mouse
Logitech  
CPUMotherboardGraphicsRAM
Athlon 7750 BE @ 3.2 Asus M3N72-D 9600 GSO G94 512 2x2 PNY XLR8 DDR2 
Hard DriveOptical DriveCoolingOS
WD 200 SATA2 Pioneer Lightscribe Thermaltake R1 Windows 7 Ultimate 
MonitorKeyboardPowerCase
LG 22' Logitech Antec 500W Antec 300 Illusion 
Mouse
Logitech 
  hide details  
Reply
post #3 of 7
Thread Starter 
Quote:
Originally Posted by hednik View Post
The small boxes are artifacts meaning it isn't stable. It's odd for it to artifact at stock levels unless its. What programs have you tried to use ?
used MSI Afterburner.

Stock speeds are 725/1000, but its unstable above or at 800. Also, i think its VERY odd that artifacts come so early, seeing most people are going for 1Ghz as if its normal
post #4 of 7
Thread Starter 
bump. Anyone?
post #5 of 7
Thread Starter 
Did some more research.

Downloaded RBE and WinFlash. Saved BIOS file from GPU-Z, opened it in RBE.

Then i noticed something, BIOS voltage table is empty. Consulting RBE's FAQ stated the following:

Quote:
If there is nothing displayed at all, your card has only one fixed voltage that is applied in every state of the card.
Does this mean that whatever i set Afterburner to, or modify BIOS to, the card will always use one, single, voltage setting at all times?

edit: also

Quote:
Note: When it comes to modding 5xx0-BIOSes (and possibly BIOSes of upcoming cards), changing the voltage requires more advanced BIOS work. The voltage table is empty for these cards (so this is totally normal for these cards) and changing the voltage in the PowerPlay table will possibly cause the computer to crash.
You can enter your desired clocks in the table but will have to leave the voltages in the PowerPlay table alone. Instead, you will need to use voltage register programming.
Ok, this seems to be normal.


edit #2:

Set overdrive to 775/1125.

Got some glitching in BF3, in cinematics. What the fudge, MSI...
Edited by Ojive - 11/5/11 at 8:36am
post #6 of 7
Thread Starter 
Ok, this is freaking weird.

I flashed my card with RBE modded BIOS, where i didnt touch the speeds, just upped the voltage to 1.2. I just wanted to test how the heat would be, and it turned out to be at 54C load.

Now, i check voltage with HWMonitor and ATI Tray Tools, and voltage is at 1.0. What the frell? how is that even remotely possible?

I flashed the card with 1.2. Unless, the closest thing to 1.2v is 1.0v registered in voltage tables, there is something weird going on.

edit: seems like voltage modding is not directly supported and is dodgy at best, my results just confirmed it i guess. Also, it seems like i have to conclude that my MSI 5850 chip sucks monkeys ass for overclocking. If i want to play around with clocks, i will be looking into a new chip (will consider nVidia)
Edited by Ojive - 11/5/11 at 12:52pm
post #7 of 7
Thread Starter 
Last bump in my overclocking saga:

http://img542.imageshack.us/img542/1...kedvoltage.jpg

Apparently, the voltage table on my sample is utter ****e. Max VDDC is 1.088V.

edit: and judging by this:
http://www.techpowerup.com/vgabios/i...E&memSize=1024

the 1.088V is indeed tops, unless you flash it with 5870.
Edited by Ojive - 11/5/11 at 1:54pm
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › 5850[overclock], screen goes black and fan to max