PC Peripherals C4 DHX 8GB shows C5 ??

A

avi_avadhut

Adept
guys...
i upgraded my memory from C5DHX 2x2048.
i bought 2 new pairs of C4DHX 2x2048 kit = 8GB new ram.
old ram's time = 5-5-5-18
new ram's time = 4-4-4-12 --> printed on memory.
Windows 7 x64 shows total 8gb ram and i checked it using vmware workstation and loaded machine upto 6GB.
my problem is CPIUD shows 5-5-5-18 times.... instead of 4-4-4-12.

checked BIOS - currently at Auto mode... and it shows 5-5-5-18 only :(
do i need any changed in ratio or something ?
anybody with C4 series ram plz share your settings ...
do you need to manually set 4-4-4-12 ??
 
ops..... whats the use then..... spending extra on C4 compare to C5 :(
i can even set my old C5 series at 4-4-4-12 and it runs fine...... why the hell i purchased C4 from company :mad: at extra cost and that too 2 4gb kits....
 
Nooo... i had C5 DHX 2x2048 kit = 4GB kit.
i purchased C4 DHX 4x2048 kit = 8 GB kit. and i have installed only new kit. my C5 kit is outside of machine. i wounder why it happens ? not sure to modify it from C5 to C4 on my own in BIOS. coz BIOS shows 5-5-5-18 :(
its printed 4-4-4-12 on RAM. i dont want to jump any voltage or anything. i want to use default settings without playing in BIOS.
C5 works at 1.8v and C4 series works at 2.1v --> at least what is printed on RAM. thats why i am bit worried to move my new C4 kit to 4-4-4-12 :(
my mobo is hardly 3 months old - P5Q-E
any help ? any member from TE using C4 series RAM with 4-4-4-12 default timings ?
 
Well. All C4 RAMs are labeled C4 because they are guaranteed to work @800MhZ on 4-4-4-12. But the default is 5-5-5-15 just because it increases compatibility across many motherboards. You need to change the timings to C4 yourself as printed on the memory. C5 Kits are not guaranteed to work on C4, so if they don't work at those timings, you can't do anything. But with C4, they have to work at C4.

Hope it explains the things :) I have the same DHX C4 kit and its amazing. OCs easily to 1000MhZ.
 
thx man...
just a small suggestion..
i should use it as 4-4-4-12 @ 800 MHz or 5-5-5-18 @ 1000 MHz ???
what is better... i am not into gaming and all... i am into vmware. so i want stable platform and no voltage change at all..... :)
 
use it as 5-5-5-18 @ 1000 MHz, Intel platform benifits more from high freequency, 4-4-4-12 @ 800 MHz if U are using AMD. U can try both, run Super Pi and see URself, 1000 will be faster. If it was 900 444-12 and 1000 555-18, then I w'd have reccommended 900. See if UR RAM can do 900 w/ CAS 4, it should.
 
5-5-5-18 @ 1000MHz is better than 4-4-4-12 @ 800MHz.
ur E8400 will love the increase bandwidth.more so if u oc ur proccy as well.
sud do 4GHz easily.try a 1:1 ratio. (500 x 8 for proccy).
 
all this without any voltage change.... right ?
let me give a shot...btw i dont have good cooler.... default intel cooler :(
here are specs of my RAM.
Each module set is tested together at 800MHz
 Tested and packaged together
 Packaged together immediately following
system test
 Tested at latency settings (4-4-4-12) at 2.1V
 SPD programmed at:
 JEDEC standard 5-5-5-18 values at 800MHz
 EPP: 800MHz, 4-4-4-12-2T, 2.1V
4096 Megabytes of DDR2 memory
 Two matched CM2X2048-6400C4DHX
modules
 Unique DHX technology providing maximum cooling
 100% tested at 800MHz in high performance DDR2
motherboards
 Lifetime warranty
 
the mobo recognizes jdec profiles.

epp profile is to be set manually.

ur ram seem to have CL4 at 2.1V.

its recommended that u check how far it can go at 2.1V n CL4...

if its doin 1000MHz CL5 at 2.0V n say less than 900MHz CL4 at 2.1V then run it at CL5 2.0V
 
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