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Possible problems between the VIA chipset and TCCD based Modules !?

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Super Nade

† SU(3) Moderator  †
Joined
Aug 30, 2004
Location
Santa Barbara, CA
I've been having massive problems getting my PDP-XBL (Samsung TCCD) to hit 250 MHz. Even the most relaxed timings of 3-4-4-10-1T fail! This had me frustrated as these modules are guarenteed to run at 266 MHz at those timings.

As I was contemplating my course of action, I posted on the GSkill Forums asking if the PC4400LE's would hit my target freq. I was surprised when the rep Jack, said the ASUS A8V donesn't do well with TCCD modules! In the following lines he recommends NFx chipset based boards. Clearly, this seems to indicate that TCCD doesn't like the VIA chipset.

Comments?

The original thread in the GSkill Forum:-
http://www.gskill.com/forum/index.php?showtopic=204&hl=
 
New to me too. Good post, I think we need more posts like this to help people from avoiding these situations when they are putting thier rigs together. Did they recommend any other chips to use?
 
rob 119 said:
New to me too. Good post, I think we need more posts like this to help people from avoiding these situations when they are putting thier rigs together. Did they recommend any other chips to use?

Jack (the GSkill rep) recommends the following (Quoting with minor grammatical changes) :


  • Hynix-d5 can do ddr500 ~580 at 3-4-4-8.

    Hynix-(bt-d43 or dt-d43) a DDR400 CHIP, but it has more probability to DDR500 3-4-4-8.

    winbond bh-5, ch-5 or ch-6 can do ddr500~550 2-3-2-5 , but requires >3.0 V

    Micron-5b-mt. (very Special chip. It can do ddr500 2.5-2-2-5)

He also points out that there can be differences in running 2 x 512 and 2 x 256 with these chips:

TCC5 has less probability DDR400 2-2-2-5 , more probability ddr500 above.

TCCC has more probability ddr500 .(3-4-4-8)vdimm=2.85v. 256mbx2 has good performcnce than 512mbx2.

BeerCan:
Can you list your system specs please? And are you running 2 x 512 MB? What is your VDimm? And, finally what modules are you using and their OC history (all the details please)?

I'm trying to narrow down the problem to VIA > S939 chipsets.

Edit*
I'm in touch with an Engineer from PDP regarding this issue. He'll get back to me this week with the results of their testing on the ASUS A8V.
 
Last edited:
An update:

Me said:
Jack,
.......can you tell me if TCCD has problems with VIA Chipsets?


Jack said:
Dear Super Nade
TCCD in the VIA Chipset is ok.
But it is less overclocking in this VIA Chipset.
Abit av8~ddr550.few can ddr600
asus a8v rev1 is not good overclocking.
asus a8v rev2 has makde progress overclocking.

As I know,Others brand TCCD is spec
Cosrair DDR550 2.5-4-4-8 ddr400 2-2-2-5.
OCZ REV2 ddr400 2-2-2-5.
GEIL ddr400 2-2-2-5.
GEIL DDR550 2.5-4-4-8 ddr400 2-2-2-5.
MUSKIN ddr400 2-2-2-5.
PDP ddr400 2-2-2-5. (US 219)
PQI ddr400 2-2-2-5. (US 245)

If the PDP CAN RUN DDR550 2.5-4-48,It is most powerful product.(price cheapest)~

This keypoint is in the about the board.
VIA Strong board can ddr550 2.5-4-4-8.
weak board~ddr500 2.5-4-4-8~or under ddr500.
Please tell me what board it is.

Best regards
jack

I'm not very convinced regarding the A8V being bad, as it has worked very well without any problems for me. This question remains open for discussion.

I hope somebody would confirm/disprove this with some real numbers.
 
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