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Dominator GT or G.Skil which one to keep?

post #1 of 12
Thread Starter 
Okay so I've got these g. skill ram

F3-14900CL9D-8GBXL

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231455

and these Dominator GTs

CMT8GX3M2A2000C9

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145330


which one should I keep and expand to 16gb? Will be overclocking each
post #2 of 12
The Corsair kit is 1.65v at listed speeds already, whereas the G.Skill kit is 1.5v , so there may be more headroom with the latter.

Either way, I don't think those Dominators are worth $20-25 more (per kit) than the alternative.
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post #3 of 12
Thread Starter 
yeah I think I'll keep the g.skill
post #4 of 12
Do you know which ICs are under the hood of each kit? That should be the determining factor.

With the GSkill, the 5th-8th digit of the S/N will disclose the manufacturer, on the Corsair, there is a version number on the module label, just to the right of the timings and voltage info. It will look something like "ver5.12", or similar.

There are two benefits to knowing what ICs are under the hood...first is that one may be more overclocking friendly than the other...and secondly, and of equal, if not more importance, is whether or not those ICs are still available.

If you are going to double up on the ram you want to be sure that you match the memory ICs before you worry about matching anything else, especially if you are planning on overclocking, as you stated in your post.

Edit: I recently saw a kit of those Corsairs for sale over at Hardforum and that kit was a "ver8.1x" (can't recall the last #). Those are Nanya chips, so basically at DDR3-2000 they are probably right at the edge of their limit.

That is why knowing the IC is so important.
Edited by Reefa_Madness - 5/19/13 at 5:33pm
post #5 of 12
I brand wise would chooe the G Skill's but as Reefa said,"It ultimately depends on he IC's". So pull the heatsinks off the RAM and check the IC's.
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post #6 of 12
Thread Starter 
Quote:
Originally Posted by Reefa_Madness View Post

Do you know which ICs are under the hood of each kit? That should be the determining factor.

With the GSkill, the 5th-8th digit of the S/N will disclose the manufacturer, on the Corsair, there is a version number on the module label, just to the right of the timings and voltage info. It will look something like "ver5.12", or similar.

There are two benefits to knowing what ICs are under the hood...first is that one may be more overclocking friendly than the other...and secondly, and of equal, if not more importance, is whether or not those ICs are still available.

If you are going to double up on the ram you want to be sure that you match the memory ICs before you worry about matching anything else, especially if you are planning on overclocking, as you stated in your post.

Edit: I recently saw a kit of those Corsairs for sale over at Hardforum and that kit was a "ver8.1x" (can't recall the last #). Those are Nanya chips, so basically at DDR3-2000 they are probably right at the edge of their limit.

That is why knowing the IC is so important.

The dominator gt are ver 5.11 ill check out the gskills next time I fiddle with the parts. The gskill ram was just purchased from amazon about 2 weeks ago.
post #7 of 12
Quote:
Originally Posted by Voltage_Drop View Post

I brand wise would chooe the G Skill's but as Reefa said,"It ultimately depends on he IC's". So pull the heatsinks off the RAM and check the IC's.

Don't need to pull the spreaders off at all. His last post states that the Corsairs are "ver5.11" which denotes the use of Hynix BFR chips, if it were "ver5.12" then those would be Hynix CFR based. You will have a harder time matching a BFR based kit, as most of the newer Hynix based stuff is CFR, or if you are not careful, you'll end up with a single-sided module built with MFR (normally found in 8GB modules).

That hasn't happened with Corsair yet, or at least not that I know of, but GSkill and Team are both using some single-sided modules. They take a hit, performance wise, over equivalent double-sided modules due to bank interleave. The single-sided clock real well, and in fact, the Corsair Vengeance Extreme, a DDR3-3000 part, uses MFR ICs on a single-sided chip. Clocks like crazy, but benchmarks show that the performance is not what you can get from lower clocked double-sided modules. This info is based on feedback from guys that have actually tested these modules, including some that are members here on OCN.

On the GSkill you can pretty much identify the ICs thru a combination of the manufacturing date (first four digits are year / week) and the manufacturer code (5th thru 8th digits). For example, a GSkill module sporting the Hynix code and built in late 2010 or early to mid 2011 would in all probability be using BFR, but one built in late 2011 and forward would most likely use CFR.

Follow the link below for the detail on the GSkill. The numbering scheme was changed around April of 2012 so you have to look at the production date, then the IC code.

Link:
http://www.xtremesystems.org/forums/showthread.php?283666-Figuring-out-G.Skill-s-SNs

I actually know someone that got a 2x4GB kit with one module using the old numbering scheme and the second module using the newer scheme. The last part of the serial number, which is usually sequential within a kit, were miles apart in his kit. Truly a collectible item, but you'd have a hard time proving that it actually came that way. smile.gif
Edited by Reefa_Madness - 5/20/13 at 8:06am
post #8 of 12
Quote:
Originally Posted by Reefa_Madness View Post

Don't need to pull the spreaders off at all. His last post states that the Corsairs are "ver5.11" which denotes the use of Hynix BFR chips, if it were "ver5.12" then those would be Hynix CFR based. You will have a harder time matching a BFR based kit, as most of the newer Hynix based stuff is CFR, or if you are not careful, you'll end up with a single-sided module built with MFR (normally found in 8GB modules).

That hasn't happened with Corsair yet, or at least not that I know of, but GSkill and Team are both using some single-sided modules. They take a hit, performance wise, over equivalent double-sided modules due to bank interleave. The single-sided clock real well, and in fact, the Corsair Vengeance Extreme, a DDR3-3000 part, uses MFR ICs on a single-sided chip. Clocks like crazy, but benchmarks show that the performance is not what you can get from lower clocked double-sided modules. This info is based on feedback from guys that have actually tested these modules, including some that are members here on OCN.

On the GSkill you can pretty much identify the ICs thru a combination of the manufacturing date (first four digits are year / week) and the manufacturer code (5th thru 8th digits). For example, a GSkill module sporting the Hynix code and built in late 2010 or early to mid 2011 would in all probability be using BFR, but one built in late 2011 and forward would most likely use CFR.

Follow the link below for the detail on the GSkill. The numbering scheme was changed around April of 2012 so you have to look at the production date, then the IC code.

Link:
http://www.xtremesystems.org/forums/showthread.php?283666-Figuring-out-G.Skill-s-SNs

I actually know someone that got a 2x4GB kit with one module using the old numbering scheme and the second module using the newer scheme. The last part of the serial number, which is usually sequential within a kit, were miles apart in his kit. Truly a collectible item, but you'd have a hard time proving that it actually came that way. smile.gif

Good info on identifying IC's. Sounds like you have done your research. Thanks for the info!
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post #9 of 12
I dont know why it keeps double posting. Im sorry it is unintentional
Edited by Voltage_Drop - 5/20/13 at 7:19pm
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post #10 of 12
I would say to keep the G.Skill and upgrade to 16GB's.
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