Corsair 16GB DDR4 Red Vengeance LPX 2666MHz vs LPX 3000MHz

[JayMansel]

Hello,

So I've decided on buying one of the following two RAM kits:

https://www.scan.co.uk/products/16gb-(2x8gb)-corsair-ddr4-vengeance-lpx-red-pc4-21300-(2666)-non-ecc-unbuffered-cas-16-18-18-35-xmp-

https://www.scan.co.uk/products/16gb-(2x8gb)-corsair-ddr4-vengeance-lpx-black-pc4-24000-(3000)-non-ecc-unbuffered-cas-15-17-17-35-xm

However I'm terribly confused. The latter one has a higher frequency (3000MHz) compared to the former (2666MHz), yet also has lower CAS latency (15-17-17-35 vs 16-18-18-35).

What's more odd is the latter is about 50p cheaper! So what am I missing here? Granted the latter takes more voltage, but I'm making a new build with an Asus Maixmus VIII Hero and an i7 6700K, so I wouldn't think that would cause more of an issue.

With all this info surely one would be silly to get the former one over the latter, no?

Thanks in advance.

Jamie

 

[Isokolon]

the upper was the first DDR4 stick Corsair released hence the bad latency
go with the latter

 

[Tradesman1]

What CPU and mobo? The 3000 is the the better set by far. You'll prob want a K model CPU and it may require a bit of a CPU OC to run at full 3000

 

[JayMansel]

Thanks for the replies.

Intel i7 6700k and an Asus Maixmus VIII Hero. Think going to go with the 3000 one then

 

[Tradesman1]

Should make a good combo, you'll love the Hero, Love mine 😉

 

[munkybuffon1988]

-XMP
And next manually..:
-DRAM Freq... - 3000
-DRAM Voltage - 1.35V
-Cycle Time 1 CLK
-tCL - 15 CLK
-tRCD - 17 CLK
-tRP - 17 CLK
-tRAS - 35 CLK
-tRFC - 525 CLK
-tRRD - 6 CLK
-tRRD_L - 8 CLK
-tFAW - 33 CLK