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Voltage change on Sapphire 4850

MopeyMartian

MopeyMartian

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GPUTool says it can't adjust my cards voltages so I'm hoping I can change them in RBE. I think I've got this straight...



From reading the tutorial I should be able to:

a) adjust the voltage under 03, 07, 08 and 09 to 1.158
b) hit Save BIOS
c) Load that BIOS onto the card using WinFlash

I don't need to touch anything else, GPUTool already does the rest for me. Is there anything I'm missing??? :confused:
 
MopeyMartian

MopeyMartian

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Messages
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Video Card(s) EVGA RTX 2070 w/2 Arctic P12 fans
Storage Samsung Evo 250GB & many more
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No one has any feedback for me?

I'm not looking for "Will this work?" Frankly, I don't know if it will.

What I do want to know is if these are the proper steps to take so that I don't bork my card.

Since the BIOS will be, roughly, 99% the same everything should work. Correct?


Maybe you'd rather tell me, "Shut up and buy a HIS 4870 for $150 from ZipZoomfly!", instead.

I'd love to... if I could. :cry:
 
LagunaX

LagunaX

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MopeyMartian

MopeyMartian

Joined
Dec 18, 2004
Messages
196 (0.03/day)
System Specs
Processor AMD R5 3600 @4.4GHz
Motherboard MSI B450 Tomahawk Max
Cooling Scythe Fuma 2
Memory PNY 16GB DDR4-3200
Video Card(s) EVGA RTX 2070 w/2 Arctic P12 fans
Storage Samsung Evo 250GB & many more
Display(s) ASUS 24" + Acer 24"
Case Corsair Carbide 200R
Power Supply Cooler Master V650
Mouse Logitech G305
Keyboard Corsair K70
Software Win 10 64
Ok... I noticed a couple things I'm curious about.

You only changed the voltage on 03 and 09? Did you find out the other didn't need to be changed?

Also, why turn the fan off until you hit 40 degrees? I tried 0 rpm with GPUTool just to test and it hit 50 VERY quickly. Since my card idles around 40 my fan would be constantly kicking on. (g'damn my fan is annoying)
 
LagunaX

LagunaX

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Processor e8500 Q822A549 4.5ghz AIR
Motherboard Foxconn Mars P35
Cooling TRUE
Memory 2 x2GB Patriot Viper 1066 5-5-5-12 @ 1.8v
Video Card(s) Sapphire 5870 Unlocked
Storage 300gb Velociraptor
Display(s) Dell 24" Ultrasharp
Case Coolermaster CM690
Power Supply PC Power & Cooling 750w Quad Silencer
Software Windows 7 Ultimate x86
I just switched a few things from the original bios.
I started the fan at 40 deg so it would stay cool and not idle in the 60-70's.
Fan rpm is low at 40 not to be too loud...
 
MopeyMartian

MopeyMartian

Joined
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Motherboard MSI B450 Tomahawk Max
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Video Card(s) EVGA RTX 2070 w/2 Arctic P12 fans
Storage Samsung Evo 250GB & many more
Display(s) ASUS 24" + Acer 24"
Case Corsair Carbide 200R
Power Supply Cooler Master V650
Mouse Logitech G305
Keyboard Corsair K70
Software Win 10 64
BAGZZlash said:
It should be safe to try these settings. Go ahead. :)
Click to expand...

A setting like voltage isn't protected by the digital signature, normally? If this doesn't work I don't have a PCI card to recover with.
 
MopeyMartian

MopeyMartian

Joined
Dec 18, 2004
Messages
196 (0.03/day)
System Specs
Processor AMD R5 3600 @4.4GHz
Motherboard MSI B450 Tomahawk Max
Cooling Scythe Fuma 2
Memory PNY 16GB DDR4-3200
Video Card(s) EVGA RTX 2070 w/2 Arctic P12 fans
Storage Samsung Evo 250GB & many more
Display(s) ASUS 24" + Acer 24"
Case Corsair Carbide 200R
Power Supply Cooler Master V650
Mouse Logitech G305
Keyboard Corsair K70
Software Win 10 64
Okay, well I bit the bullet and gave it a try aaaaaaaannnnnnd...


nothing.

Well, nothing has improved with my clocks. :cry:

I made the change, just like I'd described, and Hardware Monitor reports the new volts as 1.16V. Getting all excited inside, I opened up GPUTool and hit Find Max next to the GPU slider and waited... only to watch the speed slowly creep down back to 670. :ohwell:

It seems that W1zz got lucky in his review of my card and I must have gotten a bit of a clunker.

Hopefully by the time I can afford to upgrade again Win7 will be out and I'll need a DX11 card anyway. Thx for the help.
 
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