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Flash 5850 to 5870?

Last response: in Graphics & Displays
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a b U Graphics card
April 25, 2011 7:54:29 PM

Considering a 5850, and vaguely remember reading on these forums about being able to flash them to a 5870? or am i thinking of a different series?

thanks guys

More about : flash 5850 5870

April 25, 2011 8:09:33 PM

Yes that is the right GPU however I have read reports of it working but still being unstable and of it bricking the card. Some one posted yesterday that it also needs to be a specific setup e.g. 5850 w/1gb of mem. Good Luck ;^)
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a b U Graphics card
April 25, 2011 8:55:05 PM

If that is the case, would it also be possible to flash a HD 6850 to a HD 6870?
(Sorry for thread steal).
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April 25, 2011 9:08:47 PM

Actually you are thinking the wrong series, the reference 6950 2GB can be flashed to a 6970. The 5850 has it's additional shaders physically disconnected, and therefore cannot be flashed. And the 6850 cannot be flashed to a 6870 as well.
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April 25, 2011 10:40:04 PM

One thing to keep in mind; although you can flash a 6950 to equal the performance of a 6970 there are some physical differences between the two cards. The 6950 uses two 6-pin power connectors and the 6970 uses one 8-pin and one 6-pin power connector.
I am not sure why this is and it would be interesting to know what is going on with these extra two pins.

Perhaps there not actually hooked up to anything and are only these to confuse the issue. Does anyone know?

---Max

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a b U Graphics card
April 26, 2011 6:40:34 AM

The 6970 can draw more power so, as a safety precaution, they use more wires to carry that current. But a lot of decent PSUs can supply more than spec current (75W) in a 6-pin connector. That's the idea behind the Radeon 6990 requiring two 8-pins, but drawing over 400W (2x 8-pin + PCI-e slot = 2x150W + 75W = 375W).

And to be clear, it's the 6950 2GB to a 6970, not 5850 to a 5870. And don't flash it with a 6970 bios--use the unlocked 6950 2GB bios.
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a b U Graphics card
April 26, 2011 10:33:20 AM

No you can't unlock 5850 and 6850, it's 6950 2GB, and you can unlock non-reference models...
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April 26, 2011 12:33:23 PM

shrkbay said:
No you can't unlock 5850 and 6850, it's 6950 2GB, and you can unlock non-reference models...


shrkbay means you can't unlock non-reference models
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a b U Graphics card
April 26, 2011 12:55:50 PM

You can unlock a HD 6950 2 GB reference(and a few non-reference) card into a HD 6970.The HD 5850 cannot be unlocked to a 5870.
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a b U Graphics card
April 26, 2011 3:33:53 PM

No Ethel, i meant you CAN unlock non-reference models, just the chance of success is lower.
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a b U Graphics card
April 26, 2011 6:16:12 PM

in other words if i want the performance boost i need to buy the 6950. but from what i've seen on a lot of benchmarks the 6950 performs better than the 6970? does that seem right?
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a b U Graphics card
April 26, 2011 7:20:21 PM

WHAAAT?!??!?! 6950 is 10-20% worse than 6970 and there is no 1GB 6970
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April 27, 2011 12:12:33 PM

"Actually you are thinking the wrong series, the reference 6950 2GB can be flashed to a 6970. The 5850 has it's additional shaders physically disconnected, and therefore cannot be flashed. And the 6850 cannot be flashed to a 6870 as well."

According to every tech board ever you can flash a 5850 to a 5870 if it is on a Ref. card. I'm sure your additional information is correct as well but my initial statement was not false.
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a b U Graphics card
April 28, 2011 7:10:14 AM

5850 to 5870? Hmmm...interesting...it doesn't sound as promising as the GTX 465 to 470 though--which had plenty of problems.

Top unlocks of the last couple years: #1:6950 2GB to 6970. #2: Phenom II x2 BE to Phenom II x4 BE--2nd place because it limits your overclock.
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April 28, 2011 7:16:41 AM

Reference cards are OCed cards?
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April 28, 2011 12:48:49 PM

^ A reference card refers to the originally designed board from the chip set designer (ATI/Nvidia) for each generation of product. The third party manufacturers can then choose to skip the expense of the R&D process and simply use the reference/original card or come up with a design of their own.
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April 28, 2011 2:19:45 PM

omnipanzer said:
^ A reference card refers to the originally designed board from the chip set designer (ATI/Nvidia) for each generation of product. The third party manufacturers can then choose to skip the expense of the R&D process and simply use the reference/original card or come up with a design of their own.


IC, so reference cards are normally sold by the manufacturer in this case ATI/NVIDIA. The rest in the market are non reference cards? How do we know if we have a reference card?
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a b U Graphics card
April 28, 2011 11:34:54 PM

If it says MSI, Gigabyte, ASUS, Sapphire, EVGA, etc--then it's often not reference (it might be, but I wouldn't bet on unlocking one). If it's an OC version, then it's 100% non-reference.

If it says "NVidia" or "ATI" as the manufacturer, where it normally would've said "ASUS", then it's reference.
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April 29, 2011 6:18:23 PM

shrkbay said:
No Ethel, i meant you CAN unlock non-reference models, just the chance of success is lower.


Sorry, my bad
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