Will These Get To Cas2~?

sagaboy2 · 4 May 2006 at 13:25

I want to get some high FSB memory but using A64 based system I need tight timings. The reason I need high FSB is to do with the way im overclocking and the dividers dont sink in place perfect so I end up with like DDR 380 or something rather than DDR400

So does anyone have any views on which memory will reach CAS 2 and what FSB is might run at.

G.Skill 2GB DDR HZ PC4000 (2x1GB) CAS3 Dual Channel Kit (F1-4000USU2-2GBHZ) (MY-008-GS)

Package : 2048MB kit (2x1GB) dual channel pack
- CAS Latency : 3-4-4-8 (PC4000)
- Test Voltage : 2.6~2.8 V

Price: £124.95 (£146.82 Including VAT at 17.5%)

OCZ 2GB (2 x 1GB) PC4000 Dual Channel Gold GX XTC Series EL-DDR CAS3 (OCZ5002048ELGEGXT-K) (MY-060-OC)
500MHz DDR
- CL 3-4-3-8 (CAS-TRCD-TRP-TRAS)
- 2.75 Volts

Price: £149.95 (£176.19 Including VAT at 17.5%)

Mushkin 2GB DDR XP4000 Redline Extreme Performance Dual Channel Kit (2x1GB) (991493) (MY-002-MK)

Frequency: 500MHz
- Latency: 3-3-2-8
- Voltage: 2.6V-2.9V

Price: £199.95 (£234.94 Including VAT at 17.5%)

Mushkin 2GB DDR XP4000 Extreme Performance Dual Channel Kit (2x1GB) CAS3 (991483) (MY-000-MK)

Frequency: 500MHz
- Latency: 3-4-3-8
- Voltage: 2.8V

Price: £144.95 (£170.32 Including VAT at 17.5%)

Ladforce · 4 May 2006 at 13:51

none will do cas2 at a high fsb and prob wont even do it at a low fsb either cos they arent made to do it. id get some gskill zx and just have ddr380 or something dont worry about the slight loss you wont even notice it.

Dutch Guy · 4 May 2006 at 15:35

Out of those only the Redline has a chance: http://www.anandtech.com/memory/showdoc.aspx?i=2676&p=8

Redline memory uses Infineon memorychips, the others use Samsung UCCC chips that do not like to run at low timings.

sagaboy2 · 5 May 2006 at 08:17

Dutch Guy said:
Out of those only the Redline has a chance: http://www.anandtech.com/memory/showdoc.aspx?i=2676&p=8

Redline memory uses Infineon memorychips, the others use Samsung UCCC chips that do not like to run at low timings.

Thank you very much, now its just a matter of finding some redline in stock.

Dutch Guy · 5 May 2006 at 08:54

sagaboy2 said:
Thank you very much, now its just a matter of finding some redline in stock.

Are you willing to pay the massive price difference for a few percent of speed difference?

I did some quick tests last night and found the difference in 3DMark2001 is 400 points (26900 vs 26500) between 250Mhz 2.5-2-2-10 and 250Mhz 3-4-4-10

sagaboy2 · 5 May 2006 at 11:27

Dutch Guy said:
Are you willing to pay the massive price difference for a few percent of speed difference?

I did some quick tests last night and found the difference in 3DMark2001 is 400 points (26900 vs 26500) between 250Mhz 2.5-2-2-10 and 250Mhz 3-4-4-10

Its for video coding so yes I am willing to pay

Dutch Guy · 5 May 2006 at 11:44

sagaboy2 said:
Its for video coding so yes I am willing to pay

Video coding isn't really that memory timing sensitive though: http://www.xbitlabs.com/articles/memory/display/2gb-ram_4.html

Video encoding with contemporary codecs depends just a little bit on the memory subsystem parameters. We have already pointed this out in our previous articles. Therefore, it is not at all surprising that the different size of system memory and number of memory modules installed do not really affect the performance in this type of tasks.

sagaboy2 · 5 May 2006 at 15:40

Dutch Guy said:
Video coding isn't really that memory timing sensitive though: http://www.xbitlabs.com/articles/memory/display/2gb-ram_4.html

Then Ill just set two bios settings. One with high FSB on the memory and one with tight timings and reasonable FSB say about 225. All depending one what im using it for.

Well I managed to find some from the USA seen as OCuk didnt know anything about when stock would come in.

Thanks for all the info on encoding.

Street · 5 May 2006 at 17:01

Have you considered the Corsair 3500LL RAM?

Most people seem to be able to keep CAS 2 anywhere up to around 230MHz and I can get mine to [email protected]. Other people can get similar timings and speed with them, they seem quite consistant

sagaboy2 · 5 May 2006 at 20:01

Street said:
Have you considered the Corsair 3500LL RAM?

Most people seem to be able to keep CAS 2 anywhere up to around 230MHz and I can get mine to [email protected]. Other people can get similar timings and speed with them, they seem quite consistant

I was thinking about corsair but when I was ringing the customer line at OCuk about redline and corsair they said DFI aint that happy with corsair memory.

Anyway redline is very versitile been reading some reviews about what it can do.

Only thing that equals it is OCZ VX gold which I cant find.

Street · 5 May 2006 at 20:21

I'm using a DFI Ultra-D and so is someone else I know with the same memory, no problems from either of us. I've used 3 different sets of Corsair RAM with this board and have only had problems with the BIOS the board was shipped with, think they've iron out the problems now.

sagaboy2 · 5 May 2006 at 20:39

Street said:
I'm using a DFI Ultra-D and so is someone else I know with the same memory, no problems from either of us. I've used 3 different sets of Corsair RAM with this board and have only had problems with the BIOS the board was shipped with, think they've iron out the problems now.

Been touch an go with me so I changed to some mushkin should keep me happy for a long time yet.