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How do I read/modify/flash SPD/XMP profiles on DDR4 EEPROM?

post #1 of 40
Thread Starter 
I just found out this was even a thing. I want to try to get my memory compatible with my Ryzen chip at a higher frequency, but the BIOS doesn't allow access to the sub timings.

The only sub timing I can see is TRFC, which is at 312, but the loosest TRFC in the highest clocked default SPD profile is 278. Meanwhile TRFC is 416 on the XMP profile...so I have no idea how the system is deciding what timings to use or what the other sub timings are or how to change them...unless I can create my own XMP profile and flash it. I went searching for a tool but the only thing I can find is "SPD Tool" which was posted on techpowerup in 2006 and doesn't seem to work.

What do people use nowadays to read and flash new profiles on DDR4 and where can I download it?

EDIT: Ok so so far I've been told of a tool called Taiphoon Burner

http://www.softnology.biz/

Anyone have any experience using this? How do I know if my RAM's EEPROM is write protected? Can I disable it? Do I need to fix checksums after modifying? So many questions...
Edited by bardacuda - 4/12/17 at 12:43pm
post #2 of 40
Thaiphoon Burner

Thaiphoon Burner provides powerful features for reading, modifying, updating and reprogramming SPD firmware of SPD EEPROM devices. The program fully supports all popular JEDEC standards for Serial Presence Detects and third-party enhancements, such as NVIDIA EPP and Intel XMP

But you can destroy you sticks..........
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post #3 of 40
Thread Starter 
Ok so how do I do it without destroying my sticks?
post #4 of 40
Quote:
Originally Posted by bardacuda View Post

Ok so how do I do it without destroying my sticks?

It's like flashing a BIOS, but much, much, much less known, so there's a lot more risks. If it was that easy, don't you think everyone would be doing it? tongue.gif
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post #5 of 40
Thread Starter 
Ok so it's hard. What are the risks and how do I avoid them?
post #6 of 40
Quote:
Originally Posted by bardacuda View Post

Ok so it's hard. What are the risks and how do I avoid them?

Risks.

Bricking your RAM
Only way to avoid it is to not do it.

I know this is not the answer your looking for but.

To recude the risks though, you can practice on "older" RAM before.
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post #7 of 40
Thread Starter 
It is older. I bought it a year ago biggrin.gif

I do have a 2x2GB DDR3 patriot kit in ol' bessie that I don't much care for though.
post #8 of 40
Quote:
Originally Posted by bardacuda View Post

It is older. I bought it a year ago biggrin.gif

I do have a 2x2GB DDR3 patriot kit in ol' bessie that I don't much care for though.

That's a good start.
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Hard DriveHard DriveHard DriveCooling
[Samsung] 840 EVO 256GB [A-Data] SP900 256GB m.2 [Seagate] 4TB 2.5" ST4000LM016 [Alphacool] VP755 v1 
CoolingCoolingCoolingCooling
[EKWB] Coolstream XE 360 [EKWB] Coolstream PE 360 [Alphacool] NexXxos XP3 Light Acetal [EKWB] FC 290X Lightning 
CoolingCoolingCoolingCooling
[Frozen-Q] Resevoir [Mayhems] UV White tubing 3/8" x 5/8" [Alphacool] fittings all around [NZXT] Aer F 120mm (x6) 
OSKeyboardPowerCase
[Microsoft] Windows 10 [Professional x64] [G.Skill] Ripjaws KM570 [Seasonic] Prime 650W [80+Titanium] [Case Labs] SM5 [Matte White] 
MouseMouse PadOtherOther
[Nixeus] Revel [White] [Frozen-Q] ProMat [NZXT] Hue+ [CableMod] RGB [30cm] 
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post #9 of 40
Thread Starter 
But you're right, that's not exactly the answer I was looking for haha.

Was more looking for, like, make sure you fix the checksum; only modify xmp, not spd; pray the power doesnt go out; etc.

Sooo....you got any info along those lines? wink.gif Or should I try doing this from some random translated chinese forum post that I find on google? biggrin.gif
Edited by bardacuda - 4/13/17 at 5:17am
post #10 of 40
Thread Starter 
Well I think I figured out how my system is choosing my sub timings clock ticks at least. It seems to be all be tied to the profiles. I see that B-die chips have some much looser sub timings clock ticks compared to my E-die...so I still just need to figure out how to edit those without bricking my RAM.

For comparison, my RAM uses these sub timings clock ticks:

2400MHz:
- tRC 56
- tFAW 26
- tRRDS 5
- tRRDL 7
- tCCDL 7
- tRFC1 312
- tRFC2 192
- tRFC3 132
Warning: Spoiler! (Click to show)

XMP 3200MHz:
- tRC 56
- tFAW 35
- tRRDS 7
- tRRDL 7
- tCCDL 9
- tRFC1 416
- tRFC2 256
- tRFC3 176
Warning: Spoiler! (Click to show)


Meanwhile a comparable B-die kit uses these: (I bolded the timings clock ticks that are looser)

2400MHz:
- tRC 56
- tFAW 26
- tRRDS 5
- tRRDL 7
- tCCDL 7
- tRFC1 420
- tRFC2 312
- tRFC3 192
Warning: Spoiler! (Click to show)

XMP 3200MHz:
- tRC 50
- tFAW 39
- tRRDS 6
- tRRDL 8
- tCCDL 9
- tRFC1 560
- tRFC2 416
- tRFC3 256
Warning: Spoiler! (Click to show)



I did find a thread that at least has a couple of videos on how to use Taiphoon Burner but I haven't dug through it enough yet to figure out all the nuances and caveats of flashing the RAM's EEPROM.

http://forum.notebookreview.com/threads/howto-so-dimms-extreme-boost-1600-to-2133-and-beyond-jedec-xmp.636479/

If anyone that has a clue about this stuff I do accept tips biggrin.gif
Edited by bardacuda - 4/13/17 at 9:56am
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