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TWIN2X2048-8500C5D OC capability


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I have test my dominators at 1066 5-5-5-15 timings 2.1V and also 4-4-4-12 timings at 800 Mhz 2.1V.

 

I was wondering if anyone else has tested 4-4-4-12 timings at higher frequencies? I attempted 2.1V 1000 Mhz 4-4-4-12 timings but it failed in prime in 15 seconds.

 

Recommendations for voltage?? My antec 900 has LOTS of airflow and with the heat spreaders on the chips I think I have some room.

 

Getting experienced in Ocing with my quad core but still quite new to the RAM. I have been playing with the 1:1 ratio and the 4:5 ratio with the 1000 Mhz settings.

 

Since I have alot more room to OC my processor I also may step up to 8x450 3.6 Ghz on my quad. at 3.2 full load I hit around 51C max.

 

at 900 Mhz 4-4-4-12 timings anyone have success at 2.1V?

 

Thanks.

 

 

Edit: Just saw this review

http://www.asktheramguy.com/forums/showthread.php?t=62989&highlight=TWIN2X2048-8500C5D+4-4-4-12

Whats the voltage at which warranty goes out the window?

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I have test my dominators at 1066 5-5-5-15 timings 2.1V and also 4-4-4-12 timings at 800 Mhz 2.1V.

 

I was wondering if anyone else has tested 4-4-4-12 timings at higher frequencies? I attempted 2.1V 1000 Mhz 4-4-4-12 timings but it failed in prime in 15 seconds.

You need to test with Memtest and not Prime95. Set your system to stock, the DRAM to 1066Mhz with 5-5-5-15 2T and 2.1v. Then Memtest for at least two full passes. This DRAM has a maximum warranted voltage of the stock 2.1v.

 

Download Memtest86+ V2.01 from--->

Download CPU-z from
.

Once you have found your DRAM to either be stable or unstable at these settings you can then move to begin and overclock and we can help you with that as well, but first you need to isolate the DRAM from the overclock and test the DRAM for warranted stability. After you run the Memtest on the above settings, please enter Windows and post a screenshot of the CPU-z CPU, Memory and SPD tabs. Please post a screenshot of both SPD modules tabs.

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I am sorry, I was at work and didnt type everything.

 

When I meant stable, I meant >100% on memtest also.

 

I want to get these chips to 4-4-4-12 timings at a higher frequency.

 

I am currently going to start stepping up slowly at the 4-4-4-12 2t timings and keep 2.1V.

 

Is there any idea on previous users that can get the 4-4-4-12 timings at a higher freq IE >850 Mhz with 2.1V

 

these chips with good airflow safe to go to 2.2V? for more stability at higher freq with tighter timings?

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When you go past 2.1v you forgo the warranty. That being said, we are in the Enthusiast section and I personally have had no issues with 2.2v on PSC modules. They do not get too hot, but I have not either seen timings lowered with the extra voltages either. So, I can not say to try it since you are going past the warranted voltages and I can not give advice to do so. I have taken mine higher than 2.1v in testing, found no issues, but found such a little difference in either bandwidth increase or timings decrease that I moved back to 5-5-5-15 2T and 2.1v. I have not found any benefit from the minimal upclocking of the DDR2 platform anymore. I await the "Tock" of Nehalem and DDR3 for overclocking of memory.
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Actually, with Intel, you will do better with higher bandwidth than lower timings due to the legacy on motherboard memory controller and a somewhat more starved connect between the CPU and the Memory controller. The opposite is true for AMD with their on CPU die memory controller where latencies effect the result far better than bandwidth. Benchmarks do not show the differential, but if you use a digital stopwatch on a load of Bioshock/Crysis you will see the difference.
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  • 4 weeks later...

I'm running a DFI P965-S, 450FSB, 1:1, underclocking the RAM at DDR900, 2.1V and 4-4-4-10. That's stable 24/7 with stock voltages (except for CPU) in Memtest, Orthos, and OCCT. That's on air (Zalman 9500, inverted BTX wind tunnel).

 

Now I'm trying 2 more sticks for 4x1GB...I'm finding that I have to increase the NB voltage quite a bit to pass Memtest. One set of RAM is v4.1, the other v6.1, but they seem to function equally well when used as a single 2x1GB pair. Loosened timings and an increase in voltage on the RAM didn't help. You might try boosting the Vcore and the NB a bit, and keep the RAM at 2.1V. I've done a lot of testing with the P965 and this RAM, and unless you're overclocking the RAM I doubt you'll need to up the voltage on it.

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  • 2 weeks later...

Sorry to revive an old thread but I plan on toying with my system again.

 

It has long been stable at 3.2 Ghz 400x8 with the RAM running at

5-5-5-15-2t 1000 Mhz. 5/4 ratio.

 

My P35 board has locked ratios or auto.

 

I was thinking about dropping down to 3.2Ghz 7x457 on the processor.

 

Keeping a 5/4 ratio on the DRAM/FSB ratio would put these guys at 1142 Mhz.

 

I am going to test it when I get home, bets on success? Also, anyone have any luck on getting these chips over 1100 successfully?

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Sorry to revive an old thread but I plan on toying with my system again.

 

It has long been stable at 3.2 Ghz 400x8 with the RAM running at

5-5-5-15-2t 1000 Mhz. 5/4 ratio.

 

My P35 board has locked ratios or auto.

 

I was thinking about dropping down to 3.2Ghz 7x457 on the processor.

 

Keeping a 5/4 ratio on the DRAM/FSB ratio would put these guys at 1142 Mhz.

 

I am going to test it when I get home, bets on success? Also, anyone have any luck on getting these chips over 1100 successfully?

I would like to know aswell. I have been running my Corsairs at 1108Mhz (12.5 x277) @ 2.1 volts for awhile now @ 5-5-5-15 2T with a 1:2 ratio with no problems. I have had them up to 1120 Mhz (12.5 x 280) but the system becomes unstable and crashes after a few minutes of video rendering.
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  • 2 weeks later...

Well I finally had some time to start my testing.

 

Current configuration is my q6600 at 3.3 Ghz 9x367

only at 1.3V BIOS Voltage :)

 

Temps barely hitting 50C under full load in prime.

 

DRAM running in dual channel at 1100 Mhz. Passed Prime95 and Memtest >100%.

 

These are 2 of the 1 GB chips. I will probably be slowly stepping up soon but no more tonight.

 

I attempted 1136 and they failed at 2.1V so I think I may like the 1100 Mhz set-up and leave them for now.

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With a VID that low, you can usually be assured of a warm CPU that can clock rather high. I would have thought ~3.6Ghz with 1.40v. Every low VID B2 CPU I have found to make a very good overclock. Good cooling was necessary and these CPU's did reach 65C load easy and 70C was not uncommon, but in gaming, and any real use, I never saw >60C load.
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I got a xigmatek S-1293 on it currently. At 3.3 it has only hit ~ 50C under Prime96 for 8 hours.

 

This must mean that you only want to run it at 3.3Ghz. ~50C is a balmy day for such a CPU but even with 3.3Ghz, it still is fast.

 

I'd run it faster personally. I bet that 400 X 9 = 3.6Ghz will do just fine. But to each their own. :D:

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  • 4 weeks later...

im currently testing my 2x2 Gb kit XMS2.8500c5d-2048 1066MHz v1.1, 2.1volt at 1142Mhz 5-5-5-18 2.2v.. so far Memtest89 stable for 2full passes along with 8 passes at the #5 test setting and one hour Prime95 stable set on blend..

 

http://i277.photobucket.com/albums/kk61/Ex0duS_5150/1142GGhzRam.jpg

http://i277.photobucket.com/albums/kk61/Ex0duS_5150/4gigsRAM1142MHz.jpg

http://i277.photobucket.com/albums/kk61/Ex0duS_5150/MemsetSuperPiEverest.jpg

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