[Help] What's wrong with my TCCD?

[superray]

I have a pair of 512M Corsair PC3200XLPT v1.2. I've never taken off the heatspreader but I think they are TCCD.
They do 200MHz 1.5-2-2-0-1T @2.6v rock stable, but the weird thing is that they cannot boot with CL2.5 or CL3.
CPU: Athlon 4000+ 939 2.4GHz
Mobo: DFI Lanparty NF4 Ultra-D (tired BIOS 0406 and 702-3 and not luck)
I have also tried on ASUS A8N-SLi Deluxe, and it was the same.

I have another stick of the same RAM with same version, just different part number. It works very well on the DFI board (2.5-4-3-7-1T 333MHz max).

So what is wrong? Please help. Your opinions will be appreciated.

[Mul]

Yeah, the XMS3200XL's are TCCD based.

Any certain frequencies that this occurs at?

Mul

[mutapha]

But I think it may be BH-5

[kitfit1]

But I think it may be BH-5


BH-5 running 1.5-2-2-2-0-1t @2.6v, obviously you've never used any then mutapha?

[cdawall]

But I think it may be BH-5

maybe if he said @2.9-3.3v but not @2.6v it wont happen on bh-5

[superray]

Yes I am pretty sure they are TCCD. I just pried the heatspreader a little bit and I saw "Samsung" on the chip.
They don't boot with CL2.5 or CL3 @ any frequency. I have tried 2.5-3-3-8 200MHz, 250MHz; 2.5-4-4-10 200, 250, 300MHz; 3-4-4-8 200, 250 ,300MHz; all of these combinations won't boot.
The RAMs seem really hate relaxed TCL vlaue.

[kitfit1]

Can you post up a list of all your bios settings for ram and voltages. Can't really tell without knowing all your settings. That is the ones you use when trying at Cas 2.5.

[superray]

200MHz:
Vddr: 2.7v or 2.8v
Tcl: 2.5
Trcd: 3
Tras: 8
Trp: 3
Trc: 14
Trfc: 22
Trrd: 3
Twr: 2
Twrt: 2
Trwt: 2
Tref: 3120
Twcl: AUTO

Bank int.: Auto
Skew control: 0
Drive strength: AUTO
Data strength: AUTO
Max. Async: AUTO
Read Preamble: AUTO
Idle Cycle: 16x
Dyn. Counter: Disable
R/W Bypass: 8x
Bypass Max: 4x
32Bit Gran.: Disable

no boot as long as TCL=2.5 or 3. extremely stable when TCL =2 or 1.5
The other settings are the same.

[STEvil]

You'll be stuck at CAS2 only now probably, its a known issue with TCCD/TCC5. Try 2-3-3-x and see how far they go.

[sacha35]

Have a go with these settings and work your way up

275 (work your way up from here)
auto
16 16
7 (start with the CPU near stock while testing ram)
100
disable
Startup
1.425V
Auto
1.20v
1.52v
2.8V


Dram Config
200
enable
2.5
03 (needs to be 4 as you push higher)
08 or 10
03 (again 4 as you go higher)
10
16
03
03
02
03
3120
auto
enabled
auto
0
Level 07 or 09
Level 2 (Reduce 30%)
Auto
normal
Auto
256
disable
16
04
disable

[kitfit1]

OK, try the following settings. Make shure that both sticks are in the orange slots.



200MHz:/alter to 250
Vddr: 2.7v or 2.8v/alter to 2.6v
Tcl: 2.5
Trcd: 3
Tras: 8
Trp: 3
Trc: 14/alter to 7
Trfc: 22/alter to 14
Trrd: 3/alter to 2
Twr: 2
Twrt: 2
Trwt: 2
Tref: 3120
Twcl: AUTO

Bank int.: Auto
Skew control: 0
Drive strength: AUTO/alter to 7
Data strength: AUTO/alter to 4
Max. Async: AUTO/alter to 8ns
Read Preamble: AUTO/alter to 5ns
Idle Cycle: 16x
Dyn. Counter: Disable/alter to enable
R/W Bypass: 8x
Bypass Max: 4x
32Bit Gran.: Disable

[superray]

kitfit1, I just tried your settings, still no boot.
I am thinking about flashing the SPD. Will that help?

[kitfit1]

kitfit1, I just tried your settings, still no boot.
I am thinking about flashing the SPD. Will that help?

Not really. If the ram won't do it, flashing won't make it do it either. As STEvil said some TCCD simply will not run at Cas2.5 upwards. The settings i gave you should work at 250HTT without any probs. But it looks like you've been unlucky with your ram.

[superray]

So it's a known issue? Actucally it does 2-3-3-5 pretty well, the highest it can get is 270MHz @ 3.2v, a voltage more than that does not help.

sacha35, I have just tried 275 with your settings, still no luck. I guess it is really a "bug" of my TCCD chips like STEvil said.

Thanks for all your input. I guess it's just the RAM itself, not the settings.

[Jaco]

yaeh , it's a known issue with TCCD.
Several users here on XS have the same problem. I too have a TCCD stick that only likes cas2.
Most probably caused by too high voltage , although we don't really know for sure. 3,2vdimm = killing your TCCD. 2.8 - 2.85v max

[kitfit1]

Jaco;2117528']yaeh , it's a known issue with TCCD.
Several users here on XS have the same problem. I too have a TCCD stick that only likes cas2.
Most probably caused by too high voltage , although we don't really know for sure. 3,2vdimm = killing your TCCD. 2.8 - 2.85v max

Yep, all the cases of this that i've read about are self inflicted(too much voltage). Using more than 2.9v over a long period of time will cause the symptoms you have i'm afraid.

[high5]

I've seen in happen even with 2.8V.

TCCD appears to be very sensitive, as far as longevity is concerned. Sticking to standard DDR400 voltage (=2.6±.1V) would be the wisest thing to do.

[SunFlowerSeeds]

I think you have a corrupted spd info on your TCCD sticks. I had the same problem where my TCCD can only operate at CL2.0. It simply BSOD at CL2.5 and CL3.0. It normally happened with TCCD stick after operated at high voltage for a long period.

[Schmetterling]

I think you have a corrupted spd info on your TCCD sticks. I had the same problem where my TCCD can only operate at CL2.0. It simply BSOD at CL2.5 and CL3.0. It normally happened with TCCD stick after operated at high voltage for a long period.

Same with my OCZ EL Platinums Rev. 2, they run fine one stock speeds (200Mhz @ 2-2-2-5) but when I run them at 300Mhz @ 2.5-4-3-5 they give me a nice BSOD after a few minutes ... They were always actively cooled by an 80mm fan above them and never received more then 2.73v. But after a few months of rosetta they crashed.

[sacha35]

My 4800's have been great and have had them for some time now; they are very sensitive to voltage though you have to find the sweet spot for them to run nice.