RTM875t-606( Info gathering and OCing)

[pyfgcrl]

Originally Posted by advan20092

Using RW-Everything I got access to 10 first PLL registers (Clock Gen button). I guess it should be just editing rw.ini to get access to other ones.

Is the clock generator button really PLL information? I thought PLL information would come out of the SMBus button.

[advan20092]

Originally Posted by pyfgcrl

Is the clock generator button really PLL information? I thought PLL information would come out of the SMBus button.

Yes it is really PLL registers. I've compared with SetFSB

[pyfgcrl]

Originally Posted by advan20092

Yes it is really PLL registers. I've compared with SetFSB

Oh, excellent... so I have an RTM875T-606 and my output is

41 88 FF FF FF 00 30 1E 10 65 7D 00 0D

do you know if there's something there I can change to alter FSB?

[advan20092]

There should be 30h bytes instead of 13d. SetFSB changed a lot of them to increase speed. I've changed 0e and 1f bytes to do so. Try edit rw.ini to allow all bytes to be displayed

[pyfgcrl]

Awesome. My hp Pavilion dv9700t with T9300 (2.5GHz) Penryn has been successfully overclocked to 3.13GHz!

cpuz_1054069-1.pngcpuz_1054069-2.pngcpuz_1054069-3.pngrealtemp_T9300_250x12-5.png


Steps:

1. Executed pin mod to TME (pin 4) on RTM875T-606 as illustrated by me here, thanks to moral_hazard, nando4, darnok44 and Darth_nVader as described here. This step actually might not have been strictly necessary, but I'm glad I did it - I'd really like to see if I can get some sort of micro-adjusting FSB tool to work... maybe then I could go even higher than 250MHz FSB!

2. Modified RAM SPD settings with SPDTool 0.63. I used Thaiphoon Burner 6.7.0.0 for advice on changing the latency parameters, and then SPDTool to fix the checksum and burn them into the module. This was all done on an old 1GB Samsung module to test (so if I screwed up, I wouldn't care so much) and now that it's working, I'm going to mod my Crucial (Micron) 2GBx2 sticks -- UPDATE: That didn't work due to the modules' SPD EEPROM being hardware write-protected, so I used two G.Skill 4GB SODIMMS instead, which did work. Details are here.

3. Downloaded custom RTM875T-606 overclocking tool based on SetFSB, found here.

4. Ran the executable OC_RTM875T_250.

5. Voila! T9300 running at 3.13GHz (max temp 70°C) stable enough to run BOINC at 100% CPU for 25 minutes now while I wrote this all up. By the way, IDA is 3.38GHz

[mujjuman]

Originally Posted by pyfgcrl

5. Voila! T9300 running at 3.13GHz (max temp 70°C) stable enough to run BOINC at 100% CPU for 25 minutes now while I wrote this all up. By the way, IDA is 3.38GHz

wow dude thats awesome

[sirgrinalot]

So is it safe to assume that this method will not work with the RTM875N-606 square realtek pll chip?

[lmkong]

If your system FAILS..............STOP, you need to try and setup the PIN17/18 Pin Config (I'll add a table for this later if we have anyone that needs it, post a reply to this topic.)

could you add the config

[tanjo-15]

Hi all.

I tried this mod on my aspire 8920g and it worked a treat.
Just grounded pin 4 of rtm875t-606 to ground.
Then i ran set fsbset and slowly ramped the cpu to 2.6 gig and is still very stable.
My notebook has the t8300 in it.

hope this helps.

[nando4]

RTM875T-606 / RTM875N-632 datasheet

Did anyone ever obtain a RTM875T-606 datasheet? I am specifically looking for info on the RTM875N-632 variant. This is the PLL visually identified to be in a i5-430M Compaq CQ41. I contacted setfsb's abo requesting access to it. Abo offered no level of support without a 'donation'.

So atm I'm not sure if the RTM875N-632 can even be overclocked.

The good part:

* the TME bit, register 09, bit 6, is disabled
* register 7 is 0x1E indicating it is a Realtek PLL

The not-so-good part:

* quite a few of the other registers are 0xFF which may mean it is not overclockable. Certainly differs to the RTM875T-606 screenshots posted earlier in this thread.
* the RTM875T-606 specific setfsb binary doesn't do any overclocking on the RTM875N-632.
* selecting any of the other Realtek PLLs in the freeware setfsb altered the CPU clockspeed or made any difference to system performance.


Image: RTM875N-632 PLL registers

With no datasheet at hand, can any RTM875* guru have a look and make any suggestions?