Question Regarding CAS Latency

[Reghu]

HI Guys,

I bought a Asus S400CA laptop recently. The laptop seems to has an integrated DDR3 4GB 1600Mhz ram with CAS 11 11 11 28 as per CPU Z. It seems there is one more slot for RAM module in the laptop. I am planning to upgrade with another 4 GB.

Unfortunately the only options that I have is

Transcend JetRam DDR3 4 GB 1600 Mhz CAS 5-6-7-8-9-10-11

and

G.Skill DDR3 4 GB Laptop RAM 1600 Mhz CAS 11-11-11-28

Which one among these is compatible and a better choice?

Thanks,
Reghu

 

[PP Mguire]

The G.Skill. It matches the timings of your current and is a better company to deal with.

 

[Reghu]

What about 9-9-9-28 CAS Latency from another Gskill ram. I believe lesser latency is better for performance.Please correct me if I am wrong?

Also Transcend seems to have lesser CAS Latency?

 

[PP Mguire]

Tighter timings (lower latency numbers) do produce better performance numbers, but you wont tell the difference in anything. Also, your current onboard RAM has 11 timings so you can't exactly change that. Meaning anything else you put in there will default to the looser timings of your current onboard module.