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Radeon R9100 recap

post #1 of 4
Thread Starter 
A long time ago I get this old card. It was, even back in his day, low end card. But it was capable of running fanless and as backup AGP card it was usefull. And exactly that is the reason, why I ended up recapping the card completely. That is, because of the problems I having with the MSI PM8M3-V mainboard stability in gaming, I need a rock-stable and 100% reliable AGP graphic card.

However this card was unlucky from the day one. First it was unlucky, because it got known bad Licon caps. These 470uF 10V suxxkas show good capacity, yet terrible ESR. 60mOhms is way over what is usable:

Radeon_R9100_Licon_cap.jpg R9100_Licon_cap_fail.jpg R9100_100uf_cap_fail.jpg

...not to mention the little 100uF 16V SMD caps having lost chunk of their capacity and ESR starting to pump up to whooping 890mOhms...

Therefore it is no surprise, that the card crash during SoF2 gaming. Almost always the game crash when level loading...

Also the card was unlucky, because when I decided to upgrade it's cooling with half of the Zalman ZM80A-HP vga heatpipe cooler. But there are no holes near the chip. So I decided to glue it to the chip. And during this the weights slided a bit and the result is, well, not optimal and ughly...

Radeon_9100_recap_1.jpg

So I decided to give the Radeon R9100 much better caps (as you can see already the caps are replaced), completely polymer (and ceramic) ones and add few and bump the capacity a little too:

Radeon_9100_recap_2.jpg

All these caps are Nichicon polymers, that have quite much better specs that the original crap caps. Even the SMD caps are Nichicon polymers now and their capacity was, with the 470uF exception, bumped from 100 to 330uF (220uF in the 6.3V case, as the bottom cap run at 5V, not 3.3V as the rest):

Radeon_9100_recap_3.jpg

That is the bottom cap - look at the shocking number of places, where caps might be! If there is cap everywhere, then the card will be probably designed to take far much powerfull graphic chip that the R9100 is:

Radeon_9100_recap_4.jpg

Near the ram chips I added 4 22uF 6.3V SMD ceramics to four empty places near the ram chips and I also added another two 330uF 4V Nichicon CK caps for better ram stability (having overclocking also in mind):

Radeon_9100_recap_5.jpg

Two of these ceramics are added to the bottom of the card:

Radeon_9100_recap_6.jpg

When the heatsink are screwed in, then the whole fault is revealed and... it did not looks nice at all. But at least it fit into the AGP slot w/o any issues...

Radeon_9100_recap_7.jpg

So, to recap this unknown Radeon R9100 card, you need:

Radeon 9100
4x 470uF 10V d10 Licon - 1x 1200uF 4V Nichicon F5 (d10x13) RR50G122MDN1 - 3,3V (top one, near coil)
- 3x 1000uF 2.5V Nichicon LF (d10x13) PLF0E102MDO1 - under 2.5V
4x 100uF 16V d6.3 SMD - 1x 220uF 6.3V Nichicon PCK0J221MCO1GS - 5V (bottom one)
- 3x 330uF 4V Nichicon CK PCK0G331MCO1GS - (3,3V)
1x 470uF 6V d8 SMD (3,3V) - 470uF 6.3V Nichicon HA (d8) SMD RHA0J471MCN1GS
2x 22uF 16V d4 SMD (2,5V) - 22uF 6.3V Murata X5R (1206) JMK316AB7226MLHT
- added 2x 330uF 4V Nichicon CK PCK0G331MCO1GS (near rams)
- added 4x 22uF 6.3V Murata X5R (1206) JMK316AB7226MLHT (near rams)


The result?
Well, when I put it into my MSI PM8M3-V mobo, it at first show ram errors (heartbreaking, after so much work and so many polymers and added caps...) on the screen, so I have to pull it off and check.
Fortunately, I managed to find the bit of tin, that ended up on one of the bottom ram chips and after cleaning - removed and - hoooray, all works like a charm!

Immediatelly the card go into AGP 4x mode (!) and despite being TAD slower that PNY 6800GT, the system feels notably faster. That is, because, PCI mode DO SUXX BADLY. Therefore the card is now used now to test, what is wrong with the mainboard smile.gif
post #2 of 4
Nice mod, if it was me I would've given up and bought something new.
Skylake Is Here!
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CPUMotherboardGraphicsRAM
Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
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Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
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Skylake Is Here!
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
OSMonitorKeyboardPower
Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
CaseMouseMouse PadAudio
Phanteks Enthoo Evolv ATX Mid-Tower Ducky Secret SteelSeries Fostex Purple Heart TH-X00 
Audio
AKG K553 Pro, Philips SHP9500, Superlux 668B, S... 
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post #3 of 4
Also the card was unlucky, because when I decided to upgrade it's cooling with half of the Zalman ZM80A-HP vga heatpipe cooler. But there are no holes near the chip. So I decided to glue it to the chip. And during this the weights slided a bit and the result is, well, not optimal and ughly...

So nice to see someone admit to a ****e job biggrin.gif

Apart from that its nice to have the knowledge to be able to repair at component level - good on you thumb.gif
post #4 of 4
Thread Starter 
anoob - well, you are right, but I did not have any better mainboard (at least not in working state, the best - if it will work - is a Socker 939...), so I have to go with the AGP old cards. At least I can make it up for the card with caps, when I screw up the heatsink tongue.gif

The catch is, that I need 100% reliable card, so I can determine what is faulty on my MSI PM8M3-V mainboard. Looks like the mosfets that powering the AGP slot are up to the blame, because even low-power R9100 crash after 4hours of gaming... and now I'm back in PCI mode mad.gif
Kill these damn mosfets with fire! mad.gif



ladcrooks - well, thanks mate, but... what can I say? I should have to check this, double check this and be prepared that things can slide up... I failed so I'm not going to blame anyone else for my fault.
You know - taking responsibility for your actions and not pretending to be w/o fault.

And yes, the loading crash is fixed with good caps, and that helped me to nail the problem with my mainboard down to the mosfets, because nothing else could cause the power to be cut the the card after heating up (playing longer). With the PNY 6800GT it was in around 30min, so... weaker card = my PC is more stable! biggrin.gifthumb.gif

(not exactly overclocking, more like underclocking)

And it suxx to run in PCI, mode instead of AGP 4x...

Radeon_R9100_PCI_mode.png

And it is unfortunate, that only Sapphire and Club3D actually lower the memory clocks from 250MHz to 200MHz:
http://www.techpowerup.com/vgabios/index.php?did=1002-514d--

Normal are 250/250MHz, just like the Radeon 8500:
http://www.techpowerup.com/gpudb/93/radeon-8500.html
...it should be just 250/250MHz...
(XT version was 300/300MHz, tough: http://www.techpowerup.com/gpudb/1991/radeon-8500-xt.html )

And surprisingly, look, the same PCB are used on Radeon 8500 cards - just with all the caps!!!

Radeon_R8500.jpg

...damn them smile.gif (but it give me ideas, where to add another caps... but that is probably not worth it, as the A-Data rams are slow and the card is not intended for overclocking, but for stability testing.

Of course I would love to overclock it, but the dying mosfets on my mobo will prevent and serious overclocking frown.gif It cannot even make the card running in AGP mode, so... that suxx.

It would be great, if I can just stick there temperature probes on these mosfets and read the temps, as I play SoF2 game, till the point of crash. That would be proof, that overheating one of these mosfets cause this crashing... possibly saving me the hassle to replace all there?
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