Originally Posted by E_man
Sorry, I didnt see you were the op or I would have explained further. There is no such thing as a quad channel kit (DNE = Does Not Exist). You can get a 2 dimm dual channel kit, or a 4 dimm dual channel kit. Its a little nitpicky, but can be important (and make it easier to find what you want)
If I were you, I'd get a 2x2gb set unless your planning on running things like design software or other ram intensive stuff (you'll know if you do). If your planning on gaming or ocing, a 2x2 will do fine. In fact, ocing is easier with fewer dimms.
As for what ram, well, I wouldn't worry too much. If your not running ram intensive programs (or doing some super ocing, like under liquid nitrogen) then any 2x2gb 1600 (speed) 9-9-9-24 (timings) will work
. The differences are negligable at best for most things, and the money is better spent on a processor or graphics card, psu, or what have you.
As for a specific set, I see no reason for most people to buy more than this set (104$)
It's cheap, reviews make it look reliable, not slow (not super fast) but past that, you pay big $$ for marginal returns, unless you have specific needs.
Thta's Totally NOT True! The OCZ Obsidian are Garbage! I know first hand and a few others that have had issues wit the OCZ Gold edition and some G.Skill.
Originally Posted by letsgetiton
Thing is with AMD X4 if you use all 4 slots it is limited to 1066. If you only use 2 slots you can use 1333 stock mhz, OCable to 1600, 2000, etc. So bottom line if you NEED 8GB they'll only run at 1066 so if your satisfied with 1066 just get 4X2GB of 1333 RAM. No need to go any higher because you won't be able to use it. And it doesn't matter if you buy two dual channel kits or a "quad" channel set, as long as the two dual channel kits are the same brand/model. So you get he same timings therefore the same performance out of both kits. Whichever is cheaper, quad set insures they all match and are usually cheaper then 2 sets.
This is Also inaccurate! the C2 revision Phenom II's did have some stability issues running all 4 DImm Slots populated yes.... BUT, the C3 Revisions IMC (integrated memory controller) was one of the main things improved by the means of being able to stably handle all 4 Dimm Slots populated at once with no issuses.....
Now, as for the speed. 2 Dimms only will clock better than 4 Dimms as 4 will put a bit more stain on the IMC. Limits though will range (depending on the ram) between 1750-1900ish Mhz whether it be a 2 Dimm 4Gb kit or lower. Not 1333Mhz. That is the "Officially Supported" memory standard for AMD socket AM3. Most Dual DDR3 will default to 1066Mhz @ 1.5v Dram Voltage through the use of uploaded SPD's (Serial Presence Detect) on the Dimm PCB. This ensures a safe booting environment to be able to enter into the BIOS and change the settings manually for maximum performance!
Running 4 Dimm Dual channel kits will yield less overall Memory Frequency because of the added stress on the IMC but you will be looking at a Range (once again depending on the quality of ram and how much you want to tweak the settings) more in the vacinity of 1333Mhz-1700Mhz. 1333Mhz- 1600Mhz is more realistic and easier to achieve... But higher is possible with enhanced experience with ram settings.
but i seriously do recommend NOT Getting the OCZ Obsidian as there are classified as Value Ram and most have no success getting them to run stably at any Frequency above 1333Mhz and that is will quite a bit of tweaking. Which in my opinion is Defintely NOT worth the money spent on the kit when all that one would have had to do in the first place is get a higher quality 4Gb kit that is guaranteed to run @ 1600mhz with a minumal amount of tweaking!
So choose wisely and don't spend more money that you need on one component when it could be used in other areas that would prove more lucrative, performance wise.....