It seems many people are having issues modifying their straps with older GPUs using Hex Editor. I literally had about 50-60 PMs people BEGGING for me to modify their bios. I stopped doing it because it was time consuming. I will post the GPUs I currently have which I am using.
I am getting very close to
300 Sol/s on each of my 7950 / 7970 / 280x using these straps with Claymore 11 .
I am getting very close to
350Sol/s on each of my Reference R9 290 (1100/1450) using STILT BIOS mods with Claymore 11.
Just flash these straps at your own risk, if you have no idea what you are doing, then leave this thread now. I assume NO RESPONSIBILITY if you brick your GPU, messed up your memory chips, etc. YOU HAVE TO MAKE SURE YOU HAVE THE CORRECT MEMORY. ELPIDA WONT WORK WITH HYNIX STRAPS.
These straps are basically modified with these timings
HYNIX AFR or MFR20 4E 00 01 33 31 33 20 00 00 00 00 61 88 11 08 D0 54 07 04 0C 07 C1 00 00 21 60 00 22 AA 1C 00 02 00 14 20 8A 88 80 A1 00 00 01 20 03 02 06 07 09 08 0D 0B
40 9C 00 01 33 31 33 20 00 00 00 00 84 94 22 10 F0 54 09 06 0F 0B A2 01 00 23 80 00 22 AA 1C 00 12 01 14 20 8A 88 00 A0 00 00 01 20 06 05 0B 0C 11 0C 10 0D
80 38 01 01 55 51 33 20 00 00 00 00 E7 AC 35 20 50 55 0B 0D 1A 97 34 03 00 24 81 00 22 AA 1C 00 4B 06 14 20 9A 88 00 A0 00 00 01 20 0C 08 15 19 21 18 1B 11
A0 86 01 01 55 51 33 20 00 00 00 00 29 31 46 24 50 55 0C 0D 1C 18 A5 03 00 26 A1 00 22 AA 1C 00 4B 07 14 20 9A 88 00 A0 00 00 01 20 0D 0A 18 1B 25 19 1D 11
1C 19 02 01 55 51 33 20 00 00 00 00 29 B5 46 27 50 55 0C 0D 1E 99 05 04 00 26 A2 00 22 AA 1C 00 4B 08 14 20 AA 88 00 A0 00 00 01 20 0E 0A 1A 1E 28 1A 1F 11
78 5D 02 01 55 51 33 20 00 00 00 00 6B BD 57 2D 60 55 0D 0E 22 9C 96 04 00 28 C3 00 22 BB 1C 00 53 0A 14 20 BA 88 00 A0 00 00 01 20 10 0C 1E 22 2E 1D 23 12
10 98 02 01 77 71 33 20 00 00 00 00 8C C5 48 2F 60 55 0F 0F 25 1E 17 05 00 48 C4 00 22 CC 1C 00 5C 0B 14 20 4A 89 00 A0 00 00 01 20 12 0D 20 25 32 1F 26 13
30 E6 02 01 77 71 33 20 00 00 00 00 AD CD 49 2F 70 55 0F 10 29 21 98 05 00 4A E5 00 22 EE 1C 00 64 0D 14 20 5A 89 00 A0 00 00 01 20 14 0E 24 2A 38 22 2A 14
40 0D 03 01 77 71 33 20 00 00 00 00 CE 51 4A 2F 70 55 10 10 2B A2 18 06 00 4A E6 00 22 00 9D 00 64 0E 14 20 6A 89 00 A0 00 00 01 20 15 0F 27 2D 3C 23 2C 14
ELPIDA EDW2032BBBG
20 4E 00 02 99 91 33 20 00 00 00 00 60 88 11 07 C0 52 0A 06 0F 09 91 00 00 20 41 00 22 AA 1C 00 15 00 14 20 9A 88 40 A1 00 00 00 00 03 01 05 07 08 0A 10 0C
40 9C 00 02 99 91 33 20 00 00 00 00 60 94 12 0F D0 52 0A 07 15 8D 32 01 00 20 41 00 22 AA 1C 00 1D 03 14 20 9A 88 80 A2 00 00 00 00 06 01 0A 0F 10 0E 16 0C
80 38 01 02 77 71 33 20 00 00 00 00 A5 AC 35 1F 30 53 09 0C 20 98 75 02 00 44 82 00 22 AA 1C 00 44 09 14 20 2A 89 00 A5 00 00 00 00 0C 06 14 1A 20 19 21 0F
90 5F 01 02 77 71 33 20 00 00 00 00 E7 B4 36 23 40 53 09 0D 24 9B C6 02 00 44 A2 00 22 AA 1C 00 4C 0B 14 20 2A 89 80 A5 00 00 00 00 0E 08 16 1C 24 1C 25 0F
A0 86 01 02 77 71 33 20 00 00 00 00 29 39 77 26 50 53 09 0E 26 1D 17 03 00 64 A2 00 22 AA 1C 00 54 0C 14 20 AA 89 00 A6 00 00 00 00 0F 0A 18 1D 27 1E 27 10
48 E8 01 02 77 71 33 20 00 00 00 00 AD 49 79 30 70 53 09 10 2D 23 E9 03 00 66 E3 00 22 AA 1C 00 64 0F 14 20 BA 89 80 A7 00 00 00 00 13 0E 1E 23 31 24 2E 11
F0 49 02 02 77 71 33 20 00 00 00 00 CE CD 59 39 80 55 11 11 2E 15 89 08 00 48 C6 00 22 33 9D 08 6C 00 14 20 6A 89 00 A0 02 00 31 20 14 0F 26 2B 88 25 2F 15
C4 7A 02 02 77 71 33 20 00 00 00 00 73 62 7C 3E B0 53 09 14 3A 2D 1C 05 00 69 26 01 22 AA 1C 00 04 06 14 20 EA 89 80 A9 03 00 03 00 19 14 26 2B 3F 2E 3B 13
98 AB 02 02 77 71 33 20 00 00 00 00 B5 6A 7D 43 C0 53 09 15 3E 30 7D 05 00 6A 27 01 22 AA 1C 00 0C 08 14 20 FA 89 40 AA 03 00 03 00 1B 16 29 2E 44 31 3F 13
All credit goes to
http://www.overclock.net/t/1554360/tahiti-memory-timings-patch-for-hynix-vramI set the memory clock lower so you can increase into the higher straps if you aren't having stability problems.
The straps are
1375 MHz (1001-1375 MHz) - AFR 1000MHz Memory Timings, tight
1550 MHz (1376-1550 MHz) - AFR 1125MHz Memory Timings, tight
1700 MHz (1551-1700 MHz) - modified AFR 1250MHz Memory Timings by The Stilt, tight
1900 MHz (1701-1900 MHz) - modified AFR 1375MHz Memory Timings by The Stilt, tight
So start at 1400Mhz, if it works try 1575 and see which is better. Even try 1701 but I doubt it will be much faster.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fwww.asus.com%2Fmedia%2FUS%2Fproducts%2FwrVii9B32pnTuM3r%2FP_500.jpg&t=665&c=oZGePTI5dOg6oQ)
ASUS R9 280X with HYNIX AFR memory
https://mega.nz/#!zwl1WDIa!kLFqZgCkMPiH1DOQe3Rg3FbQHpXZN-xq_CdmREBha04
Slight undervolt to 1.075V, 1070/1600.
MSI Might say 1375 for mem but its 1600 since I didn't update the previous DPM field in VBE.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fwww.asus.com%2Fmedia%2Fglobal%2Fproducts%2F0MltKGsARClFuQZQ%2FP_setting_fff_1_90_end_500.png&t=665&c=yt9SDHvbThndHg)
ASUS 7970 with HYNIX MFR memory
Slight undervolt. 1100/1400.
Try running at
1575 Mem, I had one GPU lock up at that mem freq so I am leaving it lower at 1400.
https://mega.nz/#!m08FhDgL!D_AhbYCZfPNZTzXct7vU6u-DJpEEb_8mLMc0OtJfBl8
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fwww.techspot.com%2Farticles-info%2F496%2Fimages%2FImage_02S.jpg&t=665&c=BhUpZVjvelN1hg)
GIGABYTE 7950 with HYNIX AFR Memory
Slight undervolt. 1000/1400.
Try running at 1100/1575.
https://mega.nz/#!L5N1kIzQ!Cabi7Cg_wO91jMzk9lKmsB5pfZXNKTggBjMetNgZrIQ
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fwww.guru3d.com%2Fmiraserver%2Fimages%2F2012%2Fgbt-7970%2FIMG_5796.jpg&t=665&c=NHNybzKNmk3qlQ)
GIGABYTE 7970 with HYNIX AFR Memory
Slight undervolt. 1050/1400.
Try running at 1100/1575.
https://mega.nz/#!Do1GlbYb!-fohVnHB2Fk04BNDTmznQwGovXWBX7fd8ZmlVG9aaw0
Gigabyte 280x and
Elpida EDW2032BBBG https://mega.nz/#!K9l3jDCT!z8tmV57GkU6JEHxgaZhkOdCMMS09XF9a0z5YJfyyZJg
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi64.tinypic.com%2Fjkh8c6.png&t=665&c=hgswG0eEvoS8wg)
MSI 280X HYNIX MEMORY
https://mega.nz/#!XgUkHITB!OfyjihtlhHgi5Mk3fYPr-w3EbB1qXsVt0BB5r66EJew
Downclocked to 1000/1400. If its stable keep increasing until 1100/1575.
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fimages.anandtech.com%2Fdoci%2F7481%2F290Car_678x452.jpg&t=665&c=fFmdUPUXlWiFYQ)
REFERENCE R9 290 / R9 290X
https://drive.google.com/drive/folders/0B2XVfIhkHZlfMllHSHp5RmFvYlU?tid=0B2XVfIhkHZlfcVR0QzhlQlhJYTA290X:
MBA_C6710101-100_K2_AGR_STILTMXT_V32.zip (DPM7 - 1.2375V)
MBA_C6710101-100_K2_AGR_STILTMXT_V36.zip (DPM7 - 1.2125V)
MBA_C6710101-100_K2_AGR_STILTMXT_V3A.zip (DPM7 - 1.1875V)
MBA_C6710101-100_K2_AGR_STILTMXT_V3E.zip (DPM7 - 1.1625V)
MBA_C6710101-100_K2_AGR_STILTMXT_V42.zip (DPM7 - 1.1375V)
MBA_C6710101-100_K2_AGR_STILTMXT_V46.zip (DPM7 - 1.1125V)
290:
MBA_C6711101-100_K2_AGR_STILTMP_V34.zip (DPM7 - 1.2250V)
MBA_C6711101-100_K2_AGR_STILTMP_V38.zip (DPM7 - 1.2000V)
MBA_C6711101-100_K2_AGR_STILTMP_V3C.zip (DPM7 - 1.1750V)
MBA_C6711101-100_K2_AGR_STILTMP_V40.zip (DPM7 - 1.1500V)
MBA_C6711101-100_K2_AGR_STILTMP_V44.zip (DPM7 - 1.1250V)
MBA_C6711101-100_K2_AGR_STILTMP_V48.zip (DPM7 - 1.1000V)
The recommended memory frequency is
1375MHz - 1450MHz for Elpida and
1375MHz - 1475MHZ for Hynix.Start with the lowest voltage and move your way up if its unstable. If you are lazy just flash with the highest voltage.
You can also remove your backplate in your R9 290 and it will run cooler and quieter try following.
http://semiaccurate.com/2013/11/11/diy-amd-radeon-r9-290x-heatsink-mod/