[Shades6091]

G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL

and

G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL8D-8GBXM

Without issue?

 

[billbartuska]

They should be OK for stock speeds, but overclocking with mixed mamory is a crap shoot.

 

[Shades6091]

Yeah I don't plan on overclocking. Just upgrading the RAM.

 

[mathelm]

From everything I've read, the only real advantage to having "matched" dimms is in extreme OCing of your ram. So long as the timings are the same, you shouldn't have any problems.

Have a look at this article...

 

[AMD4ME]

Mixing RAM even of the same specs is a crapshoot and often does not work without issues. All you can do is try it. With RAM prices so low it's recommended to buy one, matched, tested RAM kit of the full quantity you need.

4 GB. is fine for gaming and general use. 8 GB. is more than enough for 99% of PC users. More RAM does NOT equal faster system performance it just allows you to open more apps concurrently.

 

[ChaoticKinesis]

Having 16GB of RAM myself, I will echo AMD4ME's comment. Unless you do a lot of multi-tasking, rely heavily on virtual machines, use specialized applications for things such as photo/video editing, or have a multi-GB RAM disk you have practically no chance of exceeding 8GB in use. I think the most I have managed to use was 12GB or so and that was with two virtual machines running, which I don't normally do. But I don't work with photos or videos and have no idea how much those can use up realistically. Typically, I'm able to leave all my programs open and run a game, and my memory usage will be around 8GB.

With that said, if you already have the RAM laying around with no use for it, I see no harm in putting it in and seeing if it runs okay. However, unless you do any of the above, you will probably not gain any increase in performance. In fact, you may even lose some performance by running non-matching RAM, if it means having to run them at lower clocks or timings. For these reasons, I would not advise purchasing this additional RAM if you don't already have it. As has already been mentioned, RAM is so cheap that you may as well just buy a 16GB kit. If you watch Newegg's Shell Shocker deals, you should be able to pick up a nice kit for around $65. Lately, they've had this type of deal every week or two.

 

[mathelm]

Windows will increase the size of your virtual memory based on the ram installed, so first thing, go into your system and reduce your "virtual memory" (page file) to 400 mb /800 max (start-control panel- system- advanced system settings- performance/settings- advanced/change) 400 leaves enough room for a crash report and speeds up your system by not having it constantly accessing the HD ( not as big an issue if you're using a SSD, but still ). A restart is required.

Second, If you don't use the "hibernate" function goto "my computer and right click the C: drive and select "properties". Then click on "disk cleanup" let it scan and check the "hibernate" box. With your system having 8 gig of ram now, all this should free up about 16 gig of HD space also.

Now you're using your ram. Mine hovers around 30% used with my normal programs opened. But when I use tvtoolbox to edit video it will shoot up to 92% (with all those same programs still opened).

If your computer is like mine and trys to be all things to all programs, then IMO there's no such thing as too much ram. Plus I can remember when it was $100 bucks for 100 meg stick, and that was before a factory in Taiwan burned down and the prices spiked for months ( kind of like the HD's are now)...

 

[xd_1771]

They will probably both run at CL9 (if it does work without conflict)... but then you would've wasted your money buying the CL8 kit.

Why not ask yourself this first: do you really need 16GB of RAM?