G.Skill RipjawDDR3 1600 7-7-7-24

Many thanks @DukeNukem

For general info

Many systems set RFC in nS rather than clocks. At 1600MHz (800MHz), 88 clocks equates to 110nS.

My Ripsaw has gone back now and I have the Patriot G memory on order. Unfortunately, it's out of stock, but I'm not in a major hurry so happy to wait a little.

Out of interest, how did you get the Patriot G to run?

(i) Did it just automatically setup using SPD
(ii) Did you use AOD to download a profile file
(iii) Did you use a bit of knowledge and bit of experimentation

I would be very interested in the parameters you have used - would be really grateful if you would post here or send in trust.

Cheers,

Nigel
 
The Patriot G didnt automatically set to 7-7-7-20 and when using cpuz, everest or aod there are only spd tables for *533mhz and 457mhz.

With aod i dont have the option to download a profile.

I started off by simply setting the cl,rcd,rp and ras to 7-7-7-20 and memory voltage to 1.7v in the bios and went from there.

After running memtest and prime95, i was getting the odd error in prime95 and sometimes my system would freeze up in windows or unbuntu.

So I deliberately dropped the mem voltage to below 1.7 and ran memtest, which resulted in errors. This suggested that the memory voltage wasnt high enough, since putting it back to 1.7 passed memtest everytime.

I ended up with a completely stable and prime95 error free system at 1.74v with 7-7-7-20.

Now you may have noticed i put a * next to the 533mhz.

The spd table for this is , 7-7-7-20-27-59-4-8-4-4 (cl-rcd-rp-ras-rc-rfc-rrd-wr-wtr-rtp)

I made the assumption that this was applicable to 800mhz, so matched the other settings in my bios. So far its been working well, with minor improvements in everest scores :)

Although the rfc, 59 clocks / 73.75ns , my bios doesnt go below 90ns.

Edit: after a quick calculation, to assume to 533mhz spd table applies to 800mhz is wrong, although it is has been working well.

Using 533mhz and converting 27-59-4-8-4-4 to ns = 50-110-7.5-15-7.5-7.5
So for 800mhz this would equate to in clocks, 40-88-6-12-6-6
 
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Many thanks,

I shall try these when mine turn up and hopefully, I'll have the same success.

The guys for Patriot Tech Support said there was a profile file for AOD to download but sounds like they many have been telling little porkies.

Cheers,

Nigel
 
Bit awkward the fact that the advertised latency isn't mentioned to be for P55 boards only.

The only hint and it's a vague one at that is:
This part delivers outstanding performance in the latest generation of dual-channel DDR3-based motherboards.
Click to expand...

I've found nothing wrong with mine - running on a P55 board - the memory runs exactly as it's meant to at 7-7-7-24 1600mhz and all 4 GB work. I'm happy so far that it was much better value than the slower clocked yet more expensive alternatives.
 
just to add a little help, as i have been having some trouble with settings in memory in bios, just check the command rate setting, as changing mine from 1t to 2t has really improved my situation
 
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