Should I change the Latency on my RAM?

[Sam_237]

My ram is specified to run at 9-9-9-24 but according to CPU-Z is running at 11-11-11-28, what are the possible reasons for this and should I change it in the BIOS to its specified latency?

Here is the link to my current RAM:
https://www.amazon.co.uk/dp/B004I763AW/?tag=pcp0f-21

Other PC specs that might be relevant:
Motherboard: ASRock Z77 Extreme4
CPU: Intel Core i5 3570 @ 3.4GHz
GPU: GeForce GTX 660

What CPU-Z says (note: also curious it is 1T in CR, not sure what that means)

Northbridge Intel Ivy Bridge rev. 09
Southbridge Intel Z77 rev. 04
Graphic Interface PCI-Express
PCI-E Link Width x8
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 8 GBytes
Channels Dual
Memory Frequency 799.9 MHz (1:6)
CAS# latency (CL) 11.0
RAS# to CAS# delay (tRCD) 11
RAS# Precharge (tRP) 11
Cycle Time (tRAS) 28
Command Rate (CR) 1T
Host Bridge 0x0150

The Timing Tables on CPU-Z

JEDEC #4 9.0-9-9-24-33 @ 685 MHz
JEDEC #5 10.0-10-10-27-37 @ 761 MHz
JEDEC #6 11.0-11-11-28-39 @ 800 MHz
XMP #1 9.0-9-9-24-33-2T @ 800 MHz

 

[Dark Lord of Tech]

There would be no gains by changing it , if it's stable leave it alone.

 

[Cowboy303]

While I'm a noob at this, and and I respect SR-71 Blackbird's opinion greatly due to all the knowledge I've gained reading his posts. If I was in your shoes I'd NEED to get every last drop of performance out of my rig, even it's only mental performance and not actual performance!

That being said, your motherboard appears to have defaulted into "JEDEC #6" profile, reason for this is because your less likely to have issues with your initial boot before all the updates have been installed with looser RAM settings. If you go into bios, you should be able to choose "XMP #1" profile, which should put you at the rated RAM settings.

Best of luck!