(unstable/faulty) Sapphire AMD RX 7900 XT Reference GPU

Asking price: €450

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Seller:: isaacmc12
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Location:: Kilmacud, Dublin

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(unstable/faulty) Sapphire AMD RX 7900 XT Reference GPU

Description

Currently, it boots but I assume is either unstable or faulty, potentially is the card or my 750w PSU that doesn't like it.

This GPU had issues back in June 2025 around when I bought it, I had repasted it with PTM7950 a week prior to this issue, it crashed and wouldn't POST and only showed a VGA light.

In February 2026 (recently), I tested the card and it worked again and well under GPU stress tests and had equal performance before comparing my screenshots on Cyberpunk and 3dmark scores
A few days later it froze and showed a gray screen with 4 vertical blue lines. And showed the same red VGA light as in June

Maybe VRAM issue?
Maybe it could be repaired but I'm not too sure
It may work fine on another PC but I haven't tried it, because it worked again 6 months later, not sure if it is fully broken or partially faulty.

Attached are photos of the card reopened after I repasted it back in June, it seems to be okay, no burn marks or anything.
2 missing non essential screws, see pics
Any questions or useful advice feel free to comment.
Will ignore low offers and please no silly comments

Shipping: Collection

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Payment: Cash

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Comments & Offers

Harouldious P.T Winkie Din k 4 months ago

€150 OFFERED
Does the cooling shroud stay on?

isaacmc12 4 months ago

@Harouldious P.T Winkie Din k yup, everything stays on, one screw of the 4 corners are missing which wouldn't affect it from staying on
sorry your offer is too low

jbane2010 4 months ago

Sorry but your asking price is insane for a broken GPU...

isaacmc12 4 months ago

@jbane2010 price is negotiable to a certain extent

isaacmc12 4 months ago

Card still boots after retesting it again, so I will say that it is unstable

Lyosha 4 months ago

Have you tried using a different hdmi or dp wire or port?

isaacmc12 4 months ago

@Lyosha The times it wasn't booting it didn't work regardless of what cable but it does work with HDMI and Display port.

I have mainly been using Display port before however

isaacmc12 3 months ago

Still Available:

webblade 3 months ago

I see you've had this card disassembled. Have you done any soldering/desoldering on the board or Is it still factory clean solder? Is it still posting at this moment?

isaacmc12 3 months ago

@webblade Hi, the card was only opened for a repaste then after it had issues it was reopened to examine for visual defects (which I didn't see any).
The card last I checked 2 months ago boots to OS (with my previous adverts comment) but it might crash and not want to boot again. Seems to be a cycle where it boots, crashes, doesn't post, then a few days later it boots again.

isaacmc12 3 months ago

I'm not sure if it's just because of my 750w PSU or anything. But running stress tests does work fine on it, and it seems to just crash randomly, I have seen it crash on the desktop not doing anything.

webblade 3 months ago

Your symptoms are pointing to failing gddr6 chip or a power issue to the chip. Also could be cracked solder beneath the GPU. The first I can fix but the second is above my abilities. For that reason I wouldn't offer you much more than the pre

webblade 3 months ago

Previous commenter

isaacmc12 3 months ago

@webblade Oh that would make sense, I wonder how much it would be to repair the dram

Philipp610 3 months ago

Run OCCT memory test on it. Make sure your current usage + total test % does not exceed 100% total. In other words if windows uses 1/10gb Vram set test parameters to no more than 85%. If your Vram is bust it'll start telling you about it. Won't stress ur psu. Helped me diagnose a faulty 1070ti

isaacmc12 3 months ago

@Philipp610 Thank you for the advice, I've always just quickly opened furmark but completely forgot about occt, I don't have time to test it now but I'll definitely try this later on

webblade 3 months ago

If you are not going to repair it after your tests are complete let me know if you want an offer on it. Hopefully something simple you can sort yourself

isaacmc12 3 months ago

@webblade Thanks, I'll let you know if I do

wabco 2 months ago

Hi,
Do you happen to have a photo of the artifacts or the grey screen with the blue lines when the card was failing?
It would really help me understand the issue
Thanks!

isaacmc12 2 months ago

@wabco Hi, yes luckily I did take a photo ages ago and forgot to add it, I added it now to the last photo there

wabco 2 months ago

€1 OFFERED
For DM purpose

muppetkiller 2 months ago

Are you sure the issue is your graphics card ? I had the exact same issue on my RTX3070 and was convinced there were memory issues on the card but turned out to be a defective RAM slot on my motherboard. Try switching to a single stick of ram on your board and test each slot.

isaacmc12 2 months ago

@muppetkiller I'm 70% sure it's the card I have a nvidia card that replaced it and I've had no issues with it, thought it could be the ram, I haven't heard great stories of this amd GPU unfortunately

Yigghi 2 months ago

€1 OFFERED
Offer for pm

isaacmc12 2 months ago

Still Available:

KuriyamaMR1 1 month ago

hey whats is lowest you could do?

isaacmc12 1 month ago

@KuriyamaMR1 It would probably be somewhat near the asking

KuriyamaMR1 1 month ago

is it working? I am bit confused. Its enable to get into system?

isaacmc12 1 month ago

@KuriyamaMR1 It works but in my use it has crashed and then afterwards wouldn't boot, then I would try it a few days later and it would work again, so it is why I have it down as unstable or faulty. In terms of performance when it works is as normal as other cards.

webblade 1 month ago

Did you ever get to run OCCT on it?

isaacmc12 1 month ago

@webblade Sorry no I haven't I've been busy, my PC hasn't been used in months, after July I will have time to do all this if that's okay

KuriyamaMR1 1 month ago

it sounds like capacitors or resistors issue, need to check the pcb

isaacmc12 1 month ago

@KuriyamaMR1 Yup it could be the board, will have to try and diagnose it next month

wabco 2 weeks ago

€200 OFFERED
Can collect today if willing to sell

isaacmc12 2 weeks ago

@wabco Sorry for the late response but looking for closer

Also as a general comment for the ad, I've hooked up the GPU and installed drivers, booted as normal.
And I am running a VRAM OCCT test for 1 hour will update on the results.

isaacmc12 2 weeks ago

VRAM test done at 90% memory, picture attached (last pic)