GIGABYTE GTX 780 TI WindForce 3X (Card C)

Summary

  • Very good condition cosmetically
  • At first, I thought this was a GTX 770. When fixed, I noticed it is actually a GTX 780 TI! Nice when the surprise is that way round and not a scam resulting in a lower card! 🙂
  • Resistances
    • VCore – 4.1Ω
    • VMem – 82Ω (Hynix H5GQ2H24AFR-R2C)
    • PEX – 721Ω
    • 5V – 6.32KΩ
    • 3.3V – 853Ω
    • 12V – all MΩ+ range
  • Clear picture, but error 43 in Device Manager
  • MATS reveals a faulty E1 chip

Replacing the E1 VRAM chip

It appears to be a classic faulty E1 case. I should have this chip type in stock, so I’ll try to replace it.

mats version 367.38.  Testing GK110B with 20 MB of memory starting with 0 MB.
Errors found. Use -matsinfo for details.
This message will only appear once.
  SUBPART     RANK0 RD ERR  RANK0 WR ERR   UNKNOWN ERR
------------- ------------- -------------  ------------
FBIOA[ 31:  0]            0             0             0
FBIOA[ 63: 32]            0             0             0
FBIOB[ 31:  0]            0             0             0
FBIOB[ 63: 32]            0             0             0
FBIOC[ 31:  0]            0             0             0
FBIOC[ 63: 32]            0             0             0
FBIOD[ 31:  0]            0             0             0
FBIOD[ 63: 32]            0             0             0
FBIOE[ 31:  0]            0             0             0
FBIOE[ 63: 32]            0        442831             0
FBIOF[ 31:  0]            0             0             0
FBIOF[ 63: 32]            0             0             0

Rank 0 Failing bits:
   E032 E033 E034 E035 E036 E037 E038 E039 
Read    Error Count: 0
Write   Error Count: 442831
Unknown Error Count: 0

BIT  RANK0 WRITE  RANK0 READ     UNKNOWN
---  -----------  ----------     -------
E032         155           0           0
E032         213           0           0
E032         227           0           0
E032         181           0           0
E032       53660           0           0
E032       54294           0           0
E032       54662           0           0
E032       54877           0           0
E033         765           0           0
E033        1139           0           0
E033        1248           0           0
E033        1044           0           0
E033      107589           0           0
E033      108223           0           0
E033      108591           0           0
E033      108807           0           0
E034         152           0           0
E034         213           0           0
E034         229           0           0
E034         181           0           0
E034       53660           0           0
E034       54294           0           0
E034       54662           0           0
E034       54877           0           0
E035         763           0           0
E035        1139           0           0
E035        1247           0           0
E035        1044           0           0
E035      107589           0           0
E035      108223           0           0
E035      108591           0           0
E035      108807           0           0
E036        1436           0           0
E036        1809           0           0
E036        1922           0           0
E036        1714           0           0
E036       53659           0           0
E036       54293           0           0
E036       54661           0           0
E036       54877           0           0
E037         787           0           0
E037        1139           0           0
E037        1285           0           0
E037        1044           0           0
E037      107589           0           0
E037      108223           0           0
E037      108591           0           0
E037      108807           0           0
E038         154           0           0
E038         213           0           0
E038         231           0           0
E038         181           0           0
E038       53660           0           0
E038       54294           0           0
E038       54662           0           0
E038       54877           0           0
E039         762           0           0
E039        1139           0           0
E039        1245           0           0
E039        1044           0           0
E039      107589           0           0
E039      108223           0           0
E039      108591           0           0
E039      108807           0           0

ADDRESS    EXPECTED ACTUAL   REREAD1  REREAD2  FAILBITS TPSEIB ROW  COL
---------- -------- -------- -------- -------- -------- ------ ---- ---
0001354cbc 00000000 000000ff 000000ff 000000ff 000000ff WE1037 0033 16f
0001354cb8 00000000 000000ff 000000ff 000000ff 000000ff WE1036 0033 16e
0001354cb4 00000000 000000ff 000000ff 000000ff 000000ff WE1035 0033 16d
0001354cb0 00000000 000000ff 000000ff 000000ff 000000ff WE1034 0033 16c
0001354c9c 00000000 000000ff 000000ff 000000ff 000000ff WE1037 0033 167
0001354c98 00000000 000000ff 000000ff 000000ff 000000ff WE1036 0033 166
0001354c94 00000000 000000ff 000000ff 000000ff 000000ff WE1035 0033 165
0001354c90 00000000 000000ff 000000ff 000000ff 000000ff WE1034 0033 164
0001351cbc 00000000 000000ff 000000ff 000000ff 000000ff WE1057 0033 16f
0001351cb8 00000000 000000ff 000000ff 000000ff 000000ff WE1056 0033 16e
0001351cb4 00000000 000000ff 000000ff 000000ff 000000ff WE1055 0033 16d
........
00002e728c 00000000 000000ba 000000ba 000000ba 000000ba WE1033 0007 143
00002e7288 00000000 000000ba 000000ba 000000ba 000000ba WE1032 0007 142
00002e7284 00000000 000000ba 000000ba 000000ba 000000ba WE1031 0007 141
00002e7280 00000000 000000ba 000000ba 000000ba 000000ba WE1030 0007 140
000102d83c 00000000 000000ff 000000ff 000000ff 000000ff WE1077 002b 0ef
000102d838 00000000 000000ff 000000ff 000000ff 000000ff WE1076 002b 0ee
000102d834 00000000 000000ff 000000ff 000000ff 000000ff WE1075 002b 0ed
000102d830 00000000 000000ff 000000ff 000000ff 000000ff WE1074 002b 0ec
000102d81c 00000000 000000ff 000000ff 000000ff 000000ff WE1077 002b 0e7
000102d818 00000000 000000ff 000000ff 000000ff 000000ff WE1076 002b 0e6
000102d814 00000000 000000ff 000000ff 000000ff 000000ff WE1075 002b 0e5
000102d810 00000000 000000ff 000000ff 000000ff 000000ff WE1074 002b 0e4
000102a83c 00000000 000000ff 000000ff 000000ff 000000ff WE1037 002b 0cf
000102a838 00000000 000000ff 000000ff 000000ff 000000ff WE1036 002b 0ce
000102a834 00000000 000000ff 000000ff 000000ff 000000ff WE1035 002b 0cd
000102a830 00000000 000000ff 000000ff 000000ff 000000ff WE1034 002b 0cc
000102a828 00000000 000000ba 000000ba 000000ba 000000ba WE1032 002b 0ca
000102a824 00000000 000000ba 000000ba 000000ba 000000ba WE1031 002b 0c9
if you are getting failure for first MBof FB then try option -no_scan_out
Error Code = 00000001 

                                        
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I have Hynix Hynix H5GQ2H24AFR-R2C in stock. So, hopefully, a routine VRAM fix by following Graphics Card VRAM Chip Replacement Procedure to replace E1.

VRAM E1 Pads Cleaned

Success! And a nice surprise that this card is actually a 780 TI (not the 770 I first thought it was).

Testing

  • MATS passes 10Mb, 25Mb, 50Mb
  • Kombuster HD – looking stable and good
  • 3D Time Spy – passes, score a bit below average, but this isn’t a highly clocked model. In fact GPUZ thinks it’s the reference 780 TI, unlike it’s faster brothers, the OC and GHz versions. Still, if it’s now fixed and reliable, then that’s fine.
  • These Windforce cards do seem to have efficient coolers, this one seems to run about 65°C