G.Skill F3-12800CL7D-4GBECO test results

[Corsairs]

This new low-voltage ECO line from G.Skill came up in another thread, and I thought some of you might be interested in some test results courtesy of LinkinParkBoy over at XtremeSystems.com. LPB has tested the new ECOs on both the p55 platform (results) and the x58 platform (results #1 / results #2). So how'd they do? How does DDR3 1333Mhz @ 6-6-6-15 with just 1.47v on a p55 strike you? :biggrin:

A 4GB F3-12800CL7D-4GBECO kit runs around $115 at the moment. Not a bad price at all. I'm seriously considering these for my new system.

 

[ScorcherDarkly]

As am I. I wanted to get Mushkin redlines, but the chips Mushkin was using for those parts have been EOLed, and they don't have any time table on when redlines will be available again. These seem to have loads of OC space. Should be fun to tinker with.

 

[n7]

Yup, it's some really nice RAM.

 

[lothar]

Not bad...Not bad at all.
Too bad it's over $100.

 

[MoonMouse]

Their 4GB F3-10666CL7D-4GBECO (CL 7-7-7-21-2N @ 1.35V) kit is a touch under $100 is looking tempting too

 

[Corsairs]

I really wish this came in a 6 GB kit version, especially now that I've decided to go x58 over p55. Those results of the x58 look awesome, but I'm not buying two 4 GB kits and wasting one DIMM.

 

[PUN]

I really wish this came in a 6 GB kit version, especially now that I've decided to go x58 over p55. Those results of the x58 look awesome, but I'm not buying two 4 GB kits and wasting one DIMM.

why not just install 8GB

 

[n7]

why not just install 8GB

Yeah, it's not wasting one DIMM per say.

It's not mandatory that you run 3x DIMMs in X58...

 

[Corsairs]

6 GB is the sweet spot that I'm shooting for. For my uses, I think 8 GB would be overkill. I'll stick to an affordable 6 GB kit, but if I were buying into the p55 platform I would be all over this RAM.

 

[jalyst]

....

 

[dajeepster]

i have a pair of these... been sitting on my desk for a week now

 

[Dasda]

I love the eco series and wish it was available for x58. I am even considering running these in dual channel 2x2 for now and pickup more later. Its not about skimping out on getting a 6gb kit but rather going quality over quantity.

On the other hand, I cant also go buy 3 kits of these cause it would be over budget. wish there was a 6gb kit available for around $160-180 that was just as good. The new PI series 6gb sticks are quite good but having a hard time finding them in Canada.

 

[Craig234]

i have a pair of these... been sitting on my desk for a week now

That's what she said.

 

[jalyst]

....

 

[jalyst]

So what's the consensus on these, are they decent OC'rs for 2x 2GB PC3-12800 parts?
Also if you under-clock them below stock, can you get tighter timings, & can they run on even less voltage?

I mostly want to run at stock or under-clock w/tighter timings....
But on the rare occasion that I game, a decent OC (not hard-core) would be nice too!

Not sure I'd have quite as much luck as others with a GA-H57M-USB3 though
I believe the memory controller on the Clarkdale's (I'm getting Core i3-530) reverts back to the Core micro-architecture.
And of course a lot depends on the board and it's BIOS....

Any thoughts/advice on this or other g.skill RAM greatly appreciated!

 

[DrMrLordX]

How do the ECO series DIMMS stack up against G.Skill's PIS series in terms of raw OC headroom? I understand that they occupy different price segments and so forth, but I was still curious as to whether or not the extra money for PIS DIMMs was really worth it given how well the ECO series RAM performs as such low voltages (sort-of implying that it might have a lot of headroom with more voltage).

 

[jalyst]

This is partially what I'm trying to ascertain...
So far the g.skill support forum hasn't been terribly helpful

 

[jalyst]

I'm not expecting them to OC as well as the PI, TD, or RJ (what the heck's the difference between those three anyway, why so many?), but it'd be nice if they still OC'd decently.

More importantly for me ....
Can they run at lower voltages/timings at stock or when under-clocked, than the other sticks?

 

[jalyst]

...

 

[jalyst]

Anyone? Thanks!

 

[jalyst]

Hmmm, dead thread I guess...
No one want to offer a few (helpful) thoughts

 

[DrMrLordX]

If you look around at XS, there are some threads about this memory.

The consensus seems to be that these are DIMMS with 40nm ICs from an unknown supplier. As result, they require less voltage and can reach some pretty impressive speeds at relatively low voltages (1.5v-1.6v), but that overvolting beyond a certain point (1.55v-1.65v) seems to be useless and can result in reduced stability.

On AM3 they haven't produced any truly amazing results. According to this thread:

http://www.xtremesystems.org/forums/showthread.php?t=239426

The sticks max out at around 1.55-1.65v and will top out at around DDR3-2100 CL9 or so on Intel systems.

G.Skill's Pi series has more headroom for overclocking.

edit: whether or not they can be undervolted below the stock 1.35v is probably going to be a function of the board they're on. I don't think anyone expected to run DDR3 at voltages below 1.35v, much less below 1.5v. Nobody that I have seen has tried underclocking the RAM to achieve tighter timings, either . . . you could be the first!

 

[jalyst]

Thanks for responding!

The consensus seems to be that these are DIMMS with 40nm ICs from an unknown supplier.

Hmm, I'd love to know who that is....

As result, they require less voltage and can reach some pretty impressive speeds at relatively low voltages (1.5v-1.6v), but that overvolting beyond a certain point (1.55v-1.65v) seems to be useless and can result in reduced stability.

Sounds perfect for me,
As I've no interest in the ultra high OC's that its higher binned 1600mhz 2GB cousins (TD, Pi, RL etc) can get.

On AM3 they haven't produced any truly amazing results. According to this thread:
http://www.xtremesystems.org/forums/showthread.php?t=239426

Not a "biggy" for me as I'll be on a Core i3-530...

The sticks max out at around 1.55-1.65v and will top out at around DDR3-2100 CL9 or so on Intel systems. G.Skill's Pi series has more headroom for overclocking.

Thanks again, most of this corroborates what I've read/learned...
DDR3-2100 CL9 is plenty good for me, although I will try for slightly tighter timings (doubt I'll get better)

edit: whether or not they can be undervolted below the stock 1.35v is probably going to be a function of the board they're on.

True, but I imagine characteristics of the RAM would also have to play a part.

I don't think anyone expected to run DDR3 at voltages below 1.35v, much less below 1.5v. Nobody that I have seen has tried underclocking the RAM to achieve tighter timings, either . . . you could be the first!

Indeed!

I doubt I'd be able to get much lower voltage, but hopefully under-clocked I can get slightly tighter timings.
(not that it makes much of a difference in the real world...)

Thanks again so much for taking time out to respond!
I've already received the RAM, just deciding on the H55/7 board.

I'm an extremely pedantic/anal ah heck, so it could be a while

 

[DrMrLordX]

Do let us know how it works out. Since Clarksdales seem to have a wall at DDR3-1600, your goal of reaching tighter timings would be a wise one.

Since you seem to want to undervolt your RAM, you should look for a board with BIOS vdimm settings that will go below 1.35v (if such a thing exists). Might be interesting to see if you could go below stock settings on your VTT as well.

 

[jalyst]

Hmm 1600mhz, could've sworn I've heard higher than that for clarkdales.
that's the default for the sticks I've ordered, they won't even need to be oc'd,
oh well, if true ill just have to go for tighter timings & or underclocks/volts/timings