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Groups of Green/Red Flickering pixels in 2D [Radeon HD4870]

post #1 of 7
Thread Starter 
Hey OCN,

Woke my monitor up last night to find this all over my monitor

green pixel artifacts

Basically on darker backgrounds I get groups of green pixels, and red groups on lighter backgrounds. These become more abundant the more I move the image on screen - for example if I scroll down the page I get loads of them appearing.

My rig is a X38 with Q6600 and a Gigabyte Radeon HD4870.

These are the tests I have done:

Connected a laptop to the monitor using both HDMI and DVI (DVI being the input I use with my PC) - No artifacts on screen with this device and either input to the monitor (Confirmed the monitor or it's DVI input aren't the problem)
Used a different DVI cable - no artifacts with the secondary device, PC still has them (not a cable issue)
Connected to the second DVI port on the graphics card - no difference (not an issue with the DVI port on the GPU)

So I'm thinking this is a GPU problem. What do you guys think? or could it be something else, CPU/Mobo/PSU?? It's harder for me to test those things :S Plus everything seems to boot up and run fine I just get flickering green and red pixels all over the display frown.gif

If it is a dying GPU, what would be the most economical replacement for a HD4870 on a X38 with Q6600. I use it primarily for work (Autocad/some Adobe) so gaming performance isn't a necessary target. Something that's pretty much on par with the HD4870 but preferably a lot cooler, quieter and uses far less juice?

Thanks in advance for any advice.
post #2 of 7
I think I've had similar issues with 4870. Try to lower the GPU Memory frequency by 50-100Mhz and see if that helps smile.gif
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My PC
(14 items)
 
Wife's PC
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
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post #3 of 7
Thread Starter 
Hi Ronnin,

Thanks for the reply, I've just tried out your suggestion. Dropped it by 100Mhz, then another 100Mhz and then all the way down to the lowest value it allows of 450Mhz - no change unfortunately. Is this the sign of a GPU that's had it?
post #4 of 7
Yes, so far everything points to GPU problem. If you want to save money you can try to bake it. I have so far personally revived 4 completely dead cards like that, including a Gainward 4870 smile.gif So it's not a myth, baking works, so you better try it before you spend cash on a new GPU smile.gif

As far as a new GPU goes, I recommend HD 7750 as a cheap, low-power, low-heat, good-performance alternative on the AMD side smile.gif
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CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
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Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
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My PC
(14 items)
 
Wife's PC
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
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post #5 of 7
Thread Starter 
Thanks for the advice ronnin wink.gif Never heard of baking before I'm guessing its something to do with heating up the die?

I was looking at the 7750 myself, I don't mind buying a new GPU if it's going to be the least hassle and gets me up and running again but obviously for my needs there's no point getting a Titan or anything too extravagant!
post #6 of 7
Or if your card can, cook it to see if that changes anything?
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Piledriver Reborn
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Intel I7 4770k 4.5Ghz Asus Z97 P XFX R9 270X Boost Edition 16Gb (4x4Gb) @ 1600Mhz 
Hard DriveHard DriveHard DriveHard Drive
Kingston SSDNow 120GB M.2 Seagate Constellation ES 2TB OCZ Agility III 60GB Seagate Freeplay 1TB 
CoolingCoolingOSMonitor
Enermax UCTP12P 120mm x 5 Phanteks U-Type Black Windows 10 Pro Samsung 27" Curved S27D590C 
KeyboardPowerCaseMouse
Madcatz Eclipse V5 OCZ Core-X-Stream Series 500W Zalman Z11 Plus Corsair SABRE RGB 
Mouse PadAudioOtherOther
Strix Glide Gaming Pad Corsair Void 7.1 Ikea Corner Desk ThrustMaster T-Flight Hotas X 
Other
Xbox 360 Wireless Gaming Reciever 
CPUMotherboardGraphicsRAM
Intel I3 3110M Latitude E6230 Mainboard (CPU Integrated)  Intel HD 4000 Series SKHynix 2gb DDR3 (1600Mhz) 
RAMHard DriveCoolingOS
SKHynix 2gb DDR3 (1600Mhz) Sandisk X110 128gb Latitude E6230 Stock Cooler | Antec Formula 7 Windows 10 Insider Preview 
MonitorKeyboardPowerMouse
1366x768 @ 60Hz Latitude E6230 EN-GB Qwerty Keyboard Dell Extended 66600mWh Latitude E6230 Touchpad 
Audio
IDT High Definition Audio CODEC 
CPUMotherboardGraphicsRAM
Intel Core I5 3427U Panasonic CF-AX2 Intel HD 4000 Series 4GB 1333Mhz DDR3L 
Hard DriveCoolingOSOS
128GB Samsung P830 M-Sata SSD Stock Cooler Windows 10 Pro Remix OS 
MonitorKeyboardPowerMouse
1366x768 10.1" Touchscreen @ 60Hz Panasonix CF-AX2 EN-GB Qwerty Keyboard Panasonic 29520mWh Panasonic CF-AX2 Touchpad 
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post #7 of 7
Hd 7750
Wanted: Wanted: R9 290/X/R9 390/X
$165 (USD) or best offer
  
Reply
Wanted: Wanted: R9 290/X/R9 390/X
$165 (USD) or best offer
  
Reply
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