Does Corsair Still Mfg.TWINX2048-4400Pro Kits??

[dalems97]

RAM Guy or anyone:

 

I've searched the NET hi and lo for sources of TWINX2048-4400Pro (DDR 550) kits and all are out of stock. Has Corsair discontinued manufacturing these?? Any idea what's the holdup? My goal is to buy some OC'ing RAM that is the very best possible for my board/system. I'm also considering a TWINX2048-4000PT kit (Newegg has it in stock), but I don't want to decide until I find out about availability of the 4400Pro 2 Gb kit.

I am a moderate overclocker who needs system stability ABOVE ALL ELSE. I'm also a gamer and my system currently is very stable ... but I'm thinking of future games. I want to tweak my A8N32-SLI Deluxe as far as a sane person would.

My questions are: (1) What about the availability of the 4400Pro? and (2) Is the 4000PT option the best one (e.g. will this actually be more stable memory in my system?).

 

Any feedback would be GREATLY appreciated! Happy Holidays all!

 

dalems97

[Wired]

Wait for an official response, but I believe I read somewhere else in the forum that they're only making 3200 and 3200C2 DDR1 memory, phasing DDR1 out.

[RAM GUY]

I am sorry but Wired is correct the only DDR1 memory in production is XMS3200C2 and XMS3200 at this time. Sorry!

[dalems97]

RAM Guy and Wired,

 

Thank you so much for the quick responses! I was able to snatch up a couple of 1Gb sticks of 4000PT (DDR 500) from NewEgg. Wondering what you think are best timings to run it on my A8N32SLI-Deluxe? Should I back off on the Proc multiplier from 13 to, say, 12.5 first? I'm happy if I hit 240 Mhz FSB. I have the FX-60. Power supply is Antec TruePower Trio 650W. Looking for a permanent setting for this system. I realize trial and error is required, but where would you recommend starting; how would you proceed??

 

Thank YOU!

 

dalems97

[RAM GUY]

I would start with the tested setting for the modules Cas 3-4-4-8 at 2.75 Volts and go from there. But you will have to have an unlocked CPU to run these on that system at their tested settings!

[dalems97]

Are you saying that the Athlon 64 FX-60 is NOT unlocked?? I was under the impression that this processor has an unlocked multiplier.

 

Am I wrong? Is there another type of "unlocked" to which you are referring?

 

Thanks again,

 

dalems97

[DerekT]

No, RamGuy is saying that you will need an unlocked processor. You have an unlocked processor so you are good to go.

 

Good luck!

[dalems97]

Thank you for that clarification. Normal multiplier for the FX-60 is 13; I plan to go with 12.5 and try to crank up the FSB to 240 Mhz, at the recommended settings. Am I on the right track? Would you proceed differently? I figure this is correct approach since memory controller is in the processor.

 

Advice is always appreciated.

 

Cheers,

dalems97

[DerekT]

Thank you for that clarification. Normal multiplier for the FX-60 is 13; I plan to go with 12.5 and try to crank up the FSB to 240 Mhz, at the recommended settings. Am I on the right track? Would you proceed differently? I figure this is correct approach since memory controller is in the processor.

 

I have personally found that half-multipliers are somewhat problematic with regards to stability, both with dividing the CPU and the DRAM.

 

What you want is the highest FSB you can get with stability. This is basically the method to gain the fastest processor <--> dram speed.

 

For example, Given two systems with identical hardware and the only difference being the CPU multiplier, FSB MHz, and DRAM MHz/Timings)

1. 200MHz (FSB) X 13 (Multiplier) = 2.6Ghz with 4:5 (CPU:DRAM = 400Mhz:500Mhz) Ratio.
    
   
2. 260MHz (FSB) X 10 (Multiplier) = 2.6Ghz with ~1:1 (CPU:DRAM = 520Mhz:500Mhz Ratio.
   

Now, both system run at 2.6GHz but you will find System #2 quite a bit faster than System #1 although in some "Canned Cache and Memory Subsystem" benchmarks it might seem as though System #1 is faster since the DRAM is running higher. Now if both systems were identical except for only the DRAM bandwidth, then there would be an appreciable difference with System #1 winning out against System #2.

 

Hope this helps,

 

Derek

[dalems97]

Thanks DerekT.

 

I followed everything until the very last sentence: "Now if two systems were identical except for the DRAM bandwidth ..." I thought the higher clocked FSB (260; #2) corresponded to the highest bandwidth case. I don't get what you mean by #1 wins because of higher DRAM bandwidth. I cannot see #1 system ever being faster than #2, except for those specific benchmarks you mentioned. Could you clarify?? How are you calculating "bandwidth?"

 

Also, keep in mind that I am a gamer, and my goal here is to make this system as fast as possible at game Mbyte crunching tasks. Does this mean I want as much "DRAM bandwidth" as possible, or does it mean I want the FSB to be as high a number as possible?

 

Thanks for your patience!

dalems97

[DerekT]

What I meant was that if both systems had the identical FSB, RAM timings, etc. with the only difference being the DRAM bandwith, then the system with a higher DRAM bandwidth would show an improvement.

 

In other words, all other things being equal, 1:1 is not as fast as 1:2. You want the highest CPU tied to the highest bandwidth with the lowest latency. You do not want to drop your FSB heavily to gain a higher DRAM throughput and you do not want to loosen your DRAM latency at the expense of the DRAM throughput.

 

What will make you expert is tweaking and testing until you find the "Sweet Spot" for all three variables. In that arena, you must learn yourself. :)

 

My advice? Test, tweak, test, document, test. . . ad infinitum :D: Test with games and a digital stopwatch. There is a time for theory and a time for realtime testing via a digital stopwatch. Load your games, play your games, test for FPS. You will have the answer for your system.

 

This will give you some insight on how I test.

 

http://www.houseofhelp.com/forums/showthread.php?t=56020