Simple ram question

[Zygodactyl]

DDR3 RAM 2 x 4Gb vs. DDR3 RAM 2 x 8Gb

do either of these have any advantage over each other then overall memory?
And in most situations does it make any sense to throw the 16Gb chips in a pc like this?

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($219.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($33.24 @ Amazon)
Motherboard: Gigabyte GA-Z77X-D3H ATX LGA1155 Motherboard ($134.99 @ Amazon)

Memory: DDR3 RAM 2 x 4Gb or DDR3 RAM 2 x 8Gb

Storage: Kingston HyperX 3K 120GB 2.5" Solid State Disk ($104.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ Amazon)
Video Card: MSI GeForce GTX 670 2GB Video Card ($389.99 @ Newegg)
Case: NZXT Phantom 410 (White) ATX Mid Tower Case ($80.00 @ Newegg)
Power Supply: SeaSonic 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($78.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.99 @ Newegg)
Monitor: Asus VS238H-P 23.0" Monitor ($165.99 @ Amazon)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Keyboard: Razer Arctosa Wired Standard Keyboard ($40.24 @ Amazon)
Mouse: Razer DeathAdder Wired Optical Mouse ($39.99 @ Amazon)

 

[lostgamer_03]

If they have exact similar specifications except the memory, then no.

If gaming is your main concern the 2x4 GB would be more than sufficient.

 

[neo_classical]

There are quite a few factors to consider if you want to be absolutely sure about the RAM in your machine. You mention size difference and how much per chip, but don't forget the frequency the RAM operates at as well as the voltage it's set at and the timings e.g. 8-8-8-24.
I freely admit I'm not the world's foremost expert on this and I'm sure other people have their own opinions, but I have always been of the opinion when it comes to RAM timings, make sure they're lower and evenly distributed, e.g. 8-8-8-24 is better than 11-7-9-24.
And I like your build; it's very similar to mine

 

[Zygodactyl]

There are quite a few factors to consider if you want to be absolutely sure about the RAM in your machine. You mention size difference and how much per chip, but don't forget the frequency the RAM operates at as well as the voltage it's set at and the timings e.g. 8-8-8-24.
I freely admit I'm not the world's foremost expert on this and I'm sure other people have their own opinions, but I have always been of the opinion when it comes to RAM timings, make sure they're lower and evenly distributed, e.g. 8-8-8-24 is better than 11-7-9-24.
And I like your build; it's very similar to mine

its not my build but one i'm considering. And those numbers are cas latency and with those more sporadic number will there be any noticeable difference in whatever cas latency effects?

 

[Zygodactyl]

Best answer selected by Zygodactyl.