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Why cant I do 2-2-2-5 on my 2-3-2-5?

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LoneWolf121188

Member
Joined
Dec 31, 2004
Location
Osan AB, South Korea
I currently have my comp as it is below, but even at stock, putting the mem at 2-2-2-5 renders it unable to boot (as in nothing on the screen and continuous long beeps (sometimes)). Why???
 
You probably dont have TCCD. Only TCCD and BH5 can run with solid 2s. All other RAM cannot handle that tight of a latency without completely failing. This is why.
 
What are those the LLK modules? I guess they weren't kidding when they put those specs on the packaging. Have you tried lotsa voltage?
 
Sentential said:
You probably dont have TCCD. Only TCCD and BH5 can run with solid 2s. All other RAM cannot handle that tight of a latency without completely failing. This is why.

Not all TCCD runs at 5-2-2-2...some are rated at 6-3-3-2 at PC3200...

What voltage(s) are you trying?
 
glock19owner said:
Not all TCCD runs at 5-2-2-2...some are rated at 6-3-3-2 at PC3200...

What voltage(s) are you trying?
:confused: Oh? Im not challenging that but that is a first. What RAM is rated at that with TCCD?
 
The G. Skill's LB's, LD's, LF's...

kakaroto said:
Those are new GSKILL modules with other rated timings.

200MHz______550MHz_______ 600MHz
LA 2-2-2-5_______ x _______ 2.5-4-4-8__ SC/DC kit
LB 2-3-3-6_______ x _______ 3.0-4-4-8__ DC kit
LC 2-2-2-5_______ x_______ 2.5-4-4-8__ DC kit
LE 2-2-2-5_______ 2.5-3-3-7 ____x_______ DC kit
LD 2-3-3-6_______ 2.5-4-4-8 ____x_______DC kit
LF 2-3-3-6_______ 2.5-3-3-7 ____x_______ DC kit

G.SKILL PC4400(DDR550) 2.5-4-4-8, PC3200 2-3-3-6 1GB Kit (F1-3200DSU2-1GBLD)

So if G. Skill is using the lesser TCCD chips...odds are other companys are using them also...
 
You won't kill em with a little bit of voltage, especially for a quick test.
 
yeah up to 3.0v to any ram should be fine, btw the pdp that lonewolf has is not tccd, i forget what it is though... might be tccc
 
All the TCCD I seen will run 2-2-2-5, but not very high :(. Maybe 211-215 max. But a lot of the NF3 boards don't like CAS2 whatsoever, be it BH-5 or TCCD. I think the ones with the later chipset love BH-5 if you can feed it volts. I'm currently at 247, 2-2-2-5 with 2x512 XMS3500 on my 9NDA3+ board at 3.184 VDIMM (VDIMM modded). The board was made in late November so must have the late chipset. I should do 250 at a tad over 3.2 VDIMM. Time to bump the pot.
 
2-3-2-5

This spec is very powerful.
I guess that this is winbond .13mm process.
If you want to check what chip it is,the BIOS High voltage.
If it can ddr466 pr 480 2-3-2-5 in the 3.1c, this is winbond .13mm process.
Good luck as the same as the TWIMMOS.
If it is very strong,It maybe ddr500 2-3-2-5 or 2-2-2-5in the high voltage 3.1v.
rgards
 
jack1013 said:
This spec is very powerful.
I guess that this is winbond .13mm process.
If you want to check what chip it is,the BIOS High voltage.
If it can ddr466 pr 480 2-3-2-5 in the 3.1c, this is winbond .13mm process.
Good luck as the same as the TWIMMOS.
If it is very strong,It maybe ddr500 2-3-2-5 or 2-2-2-5in the high voltage 3.1v.
rgards

However I have tested 2-3-2-5 versus 2.5-2-2-5 in 3DMark, and 2.5-2-2-5 is faster. And the Ballistix ram is capable of around DDR500 here, at 2.8-2.9 volts, so it has the advantage - if you can get good sticks. True, it does not have headroom up high, though a pair of PC4000 Ballistix I recently bought did 273 at 2.5-3-3-5.

I have tested 270x10 @ 2.5-3-3-6 with TCCD, 247x11 @ 2-2-2-5 with BH-5, and 251x11, 2.5-2-2-5 with Ballistix. I'm not talking screenies, but 3DMark2000/2001/2003/2005/Aquamark. This is around 2700-2760 mhz on a S939 board (9NDA3+). In all the benchmarks, numbers are neck-and-neck. However the TCCD only needed 2.8 volts, while I needed 3.18 on the BH-5 and Ballistix*. In Everest latency I got 34.5 at 300x9, 166 divider, 2-2-2-5 with BH-5 (245 mhz on the ram).

Interestingly enough, an NF8 S754 board running a CO Clawhammer at 258x10, 2.5-2-3-5 (Ballistix PC3200), beat the S939 resoundingly in 3DMark2001/2000! That's the muscle of the 1MB L2 cache, single channel and all.

*This pair of Ballistix was poor at 2.5-2-2-5, managing 242 at 2.8. I have two sets that do 248 at 2.8 volts.
 
Last edited:
It is true that not all TCCD will do 2-2-2-x. This quote from a recent Anandtech review of the newest Corsair does a good job of explaining why.

"What many may have forgotten along the way is that Samsung never really rated TCCD as a DDR400 memory chip. In the Samsung catalogs, TCCD was listed as a DDR500 part, and the higher costs also went along with Samsung's classification as DDR500. Most manufacturers binned (speed-sorted) the Samsung TCCD, and the parts that could do 2-2-2 at DDR400 went into the best memory. In fact, not all of the Samsung TCCD chips can do DDR400 2-2-2 timings, and some of the very best performers at very high DDR speeds simply will not do 2-2-2 timings at DDR400."

Source:
http://www.anandtech.com/memory/showdoc.aspx?i=2312
 
your memory isnt rated at 2-2-2-5 so y are u complaining and asking why??

u paid for 2-3-2-5 timings and thats what u got thats how i see it u should of paid abit extra to get G-Skill ram that can do DDR400 @ 2-2-2-5 and DDR550 @ 2.5-4-4-8 or 2.5-3-3-7
 
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