Can higher frequency ram at lower speeds yield tighter timings

Nashiem · Jul 24, 2014

So I called corsair and asked them iif I bought 2400 MHz or 2800 MHz and lowered the clock sped to 2133 could I get tighter timings. There reply was up in the air. they told me they test the memory and whatever it is stable at that's what they set the clock speed for, but couldn't give me a direct answerer. Has anyone tried this I believe in theory it would work, but not really sure.

Just to recap if I buy 2400 MHz ram and lower the frequency to 2133 can I get tighter timings than memory that is rated at 2133 mhz. lets say 2400 MHz is 10-11-11-32, and 2133 is 9-11-10-30, if I lower the 2400mghz ram to 2133 could I get like maybe 7-9-9-26?

Johan45 · Jul 24, 2014

Yes and no, that depends on what chips the ram is using some higher binned chips don't run lower speed and tight timings as well as some lower speed stuff does. You'd be futher ahead getting some 2133 ram like this CL9 http://www.newegg.com/Product/Product.aspx?Item=N82E16820231518
I have a similar kit that with extra voltag will run 2500 at 10-12-11 and 1800 at 7-9-8 timings. It's more flexible than the 2400 CL10 I had.

EarthDog · Jul 24, 2014

Like Johan said, it depends on the sticks. You likely can lower it, but how much would be the question. Honestly, unless you are getting into benchmarking and such, you might as well get the speed and timings you want. It will likely save you money as much over 1866/2133, it gets pretty expensive.

bob4933 · Jul 24, 2014

Kingston hyper X sure allows it. Running (well I was...) cl7@1430mhz for a while. Didn't really notice a difference either way though, but I'm sure that's user dependent.

EarthDog · Jul 24, 2014

They all 'allow' it. Its just up to the silicon as to how much it allows.

Johan45 · Jul 24, 2014

bob4933 said:
Kingston hyper X sure allows it. Running (well I was...) cl7@1430mhz for a while. Didn't really notice a difference either way though, but I'm sure that's user dependent.

With the right sticks you can run 2000 at CL7, that's what I meant as E_D said it all depends on what's under the hood. Most High speed ram today is meant for just that. Running high speeds.

bob4933 · Jul 24, 2014

EarthDog said:
They all 'allow' it. Its just up to the silicon as to how much it allows.

Yes yes. Just figured going from cl 10 to cl7 was noteworthy perhaps :shrug:

if nothing more than a "success story" of what he's asking.

Does this change with binned speed or is just chip to chip like cpu for overclocking?

Johan45 · Jul 24, 2014

It changes by brand of ICs not memory sticks and even different lines within the brand.
Like the 2000 CL7 is my G.Skill Flare with psc ICs under the hood.

EarthDog · Jul 24, 2014

Johan45 said:
It changes by brand of ICs not memory sticks and even different lines within the brand.
Like the 2000 CL7 is my G.Skill Flare with psc ICs under the hood.

Exactly.

Woomack · Jul 24, 2014

All depends what IC is inside. If you get 2600+ kit then there is 95% chances to get Hynix. If it's new kit then it's nearly 100% chance to get Hynix MFR. Most 2400 kits are now also based on Hynix. If you get TridentX memory up to 2400 then you will probably get Samsung IC. Kits below 2133 have everything mixed so hard to say what you get.

If you decide on 2666-2800 memory then it will probably work like:
2400 11-12-12/10-12-12
2133 9-11-11/9-11-10/10-11-11
1866 9-10-10/9-11-10/9-10-9/8-10-9
1600 8-8-8/8-9-8/8-9-9
1.50-1.65V depends from luck

If you get Samsung then it will probably work like:

2400 9-10-10/9-11-11/10-11-11/10-12-12
2133 9-10-10/8-10-10/9-11-11
1866 9-10-10/8-10-10/8-9-9
1600 7-8-8/8-8-8/8-9-9
1.50-1.65V depends from luck

Best will be to write memory series and revision ( maybe info if modules are single or double sided too ) and I bet someone can tell you something more or give advice about timings/voltages.

Mandrake4565 · Jul 24, 2014

Powerchip is PSC? If so do they make memory anymore?

Woomack · Jul 24, 2014

PSC = Powerchip , they merged with Elpida and later Micron bought both. Officially there is no PSC and no Elpida anymore. Elpida brand is still on the market but they were bancrupt because they invested too much in research and had best technology .. just no money to make anything with that technology

Mandrake4565 · Jul 24, 2014

I guess that's why I don't see any mention of Psc chips in the recent reviews on Dram. What IC tend to be the better overclockers these days.

Woomack · Jul 24, 2014

Hynix = max clocks, Samsung = tight timings
Hynix can be also good if you get good chips. I have 2x8GB Hynix kit which is running @2600 10-12-12-28 1.70V.

bob4933 · Jul 24, 2014

Good information guys, thank you!

Infinite66 · Jul 24, 2014

Hey guys. Can someone explain to a ram ignorant fool what the timings mean/do? I personally run corsair vengeance low profile ddr3 1600mhz at 9-9-9-24. What does tightening or loosening up the timings do in regards to computing performance?

Mandrake4565 · Jul 25, 2014

Maybe this will help

EarthDog · Jul 25, 2014

Mandrake4565 said:
Maybe this will help

I see that link and match it (with something a bit newer).

http://www.anandtech.com/show/6372/...333-to-ddr32400-on-ivy-bridge-igp-with-gskill

Bishoff · Aug 1, 2014

Well I'm runninng these in an AMD rig. Gigabyte UD3 990FX ver. 3 with a 8350 CPU:

http://www.newegg.com/Product/Produ...&cm_re=g.skill_f3-2400-_-20-231-672-_-Product

I'm running them @1600 but with lower timings of 9-9-9-24. I was going to play around a bit with tighter timings but It's finally stable. It won't run at 1866 nor was it stable @ stock timings @1600. Would get random lockups during gaming, but no bluescreen.

Mandrake4565 · Aug 2, 2014

Bishoff said:
Well I'm runninng these in an AMD rig. Gigabyte UD3 990FX ver. 3 with a 8350 CPU:

http://www.newegg.com/Product/Produ...&cm_re=g.skill_f3-2400-_-20-231-672-_-Product

I'm running them @1600 but with lower timings of 9-9-9-24. I was going to play around a bit with tighter timings but It's finally stable. It won't run at 1866 nor was it stable @ stock timings @1600. Would get random lockups during gaming, but no bluescreen.

Bishoff, I found that with certain sets of Ram on my Fx 8350 to run above 1866 Mhz you need to raise the Cpu Nb Voltage to 1.35V.

Can higher frequency ram at lower speeds yield tighter timings

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