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Radeon X800 Voltmods


New Member
Jun 17, 2006
781 (0.13/day)
Processor Intel P-4 3ghz @ to 4.7ghz 1.55 vcore
Motherboard ECS C19-A SLI
Cooling Thermaltake Golden Orb 2
Memory OCz ddr2 333mhz@ 432mhz 2 volts
Video Card(s) HIS ICEQ2 x800gto vivo 650/650 soon to volt mod
Storage 160gb seagate baracuda 7200 rpm+160gb western digital 7200rpm pata in pata raid 0
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Audio Device(s) Realtec integrated sound with fiber optical and coaxal? lol never heard of that 1
Power Supply Ultra ULT31845 X-Finity 500W
Software Windows XP Pro,, getting 64 bit soon...
i have absolutly no idea wat im doing with the pencil mod... i have a High Tech HX80GTOQT256GVN Radeon X800GTO IceQ II Turbo 256MB 256-bit GDDR3 PCI Express x16 Video Card red pcb so its the x850xt pcb and pics are below...
think i need beter cooling? :laugh: lol
Last edited:


New Member
May 7, 2006
4 (0.00/day)
I tried this mod and it didn't really provide any benifits so I cleared the graphite from the transistor to restore my gpu voltage, but now my temps and about 10C above what they used to be. Why is this? Is there any way to fix this?


New Member
Dec 30, 2009
29 (0.01/day)
System Name MoonShot
Processor Intel I7 DO/920
Motherboard ASUS Rampage II (GENE) v2.xx
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Storage Paper and Pencils
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Case Cooler Master
Audio Device(s) Sound Blaster X-FI custom Morels
Power Supply Corsair TX-750
Software Windows7 Pro 64bit
Benchmark Scores http://hwbot.org/community/submission/952881_1badmojoe_superpi_core_i7_920_8sec_870ms
X800 missing part question, located on PCB B28 ?

< A piece fell off my x800xt ( B28 ) left edge of top from VDD blue pencil <

When video card is powered; the fan spins up but it gives me a black screen with an error that power plug was not connected, which in fact it is properly plugged in and powered by molex connector. The missing part on the PCB location B28 is the source of my problem.

I don't know what this (B28) was as there are no markings on the one in the picture. I guess the missing part has something to do with the memory side of the card.

I've lurked around several forums over the past several months and nothing, only guess was maybe its like PCB part B21, from this picture there are similar.

My x800 xt was the second video card I ever purchased and has sentimental value to me.
I can solder a replacement missing part, if I knew what it is to be replaced with.
SO...where can I find informational source on what the PCB markings on the card represent?


I know I can save this card for at least one last run around the block and use it as practice for experimental hard moding skills following the excellent information in this thread.


New Member
Jul 7, 2018
3 (0.00/day)
I see you added another pic for overcurrent... good. Do you have a pic that covers a little farther down the board for pic3? Wanted to show the VDDQ pencil location. I have the Sapphire Pro VIVO with a blue PCB which goes nice with the blue Zalman HP. But mine never did well overclocking right from the start. I had the core up to 590 but backed it back down.


Vanguard Beta Tester
Nov 26, 2004
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Canuck in Norway
System Name Hellbox 5.1(same case new guts)
Processor Ryzen 7 5800X3D
Motherboard MSI X570S MAG Torpedo Max
Cooling TT Kandalf L.C.S.(Water/Air)EK Velocity CPU Block/Noctua EK Quantum DDC Pump/Res
Memory 2x16GB Gskill Trident Neo Z 3600 CL16
Video Card(s) Powercolor Red Devil 6950XT
Storage 970 Evo Plus 500GB 2xSamsung 850 Evo 500GB RAID 0 1TB WD Blue Corsair MP600 Core 2TB
Display(s) Alienware OLED 34” 3440x1440 175Hz
Case TT Kandalf L.C.S.
Audio Device(s) Soundblaster ZX/Logitech Z906 5.1
Power Supply Seasonic TX~’850 Platinum
Mouse G502 Proteus Spectrum
Keyboard G19s
VR HMD Oculus Quest 2
Software Win 10 Pro x64
Sweet merciful crap!...Surely this necro is a joke? :wtf: