Performance RAM vs. Value RAM - Dell XPS 8500

Tseg

Honorable
Jun 11, 2013
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10,710
I recently purchased a Dell XPS 8500 with 8GB DDR3 1600 RAM and wanted to do some upgrades. Thinking I was all that, I purchased 32GB 12800 1600 Vengeance RAM to replace the 8GB OEM RAM (I do significant, intensive photo editing). Wouldn't you know it, after the install my memory went from 800Mhz to 667Mhz. The problem is the Dell BIOS does not allow for clock changing of the RAM.

I since learned that "performance" RAM frequently ship at 1334 vs. 1600 for whatever reason and the user is supposed to know to make setting changes.

After some research I located Kingston ValueRam:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820239291

... and the review "testimonials" suggest once installed, they run at 800Mhz/1600 on an XPS 8500 right out of the shoot.

The Vengeance RAM is going back and I now wait for this Value RAM to upgrade my system.

A question (that one of the reviewers of this RAM inspired me to consider)... I'm thinking I will put the 2 new 8GB RAM in in 2 of the parallel ports and the existing 4GB in the other 2 parallel ports to bring me to 24GB RAM... and save ~$125 in the process but end up with 8GB RAM less than originally planned (although 32GB may have been overkill in the base case for my needs). Should there be any concerns or considerations with such a setup?

I wonder how many Dell owners install performance RAM and never know they just downgraded their performance?

Also, even if I could make BIOS adjustments, if I was not planning to overclock, would there be any performance difference between a Vengeance RAM running at 800Mhz and value ram running a 800Mhz? I'm guessing not. Any tests done in this regard?
 
Solution
Take a look at the timings, the CL (CAS Latency) or first timing is often the key, lower CL is better (less clock cycles to perform an action) so if performance sticks are at 9 (and typically say 9-9-9) and value sticks the same - little to know gain) the value may come without a heat sink, but it's not really required

Tradesman1

Legenda in Aeternum
Take a look at the timings, the CL (CAS Latency) or first timing is often the key, lower CL is better (less clock cycles to perform an action) so if performance sticks are at 9 (and typically say 9-9-9) and value sticks the same - little to know gain) the value may come without a heat sink, but it's not really required
 
Solution

Tseg

Honorable
Jun 11, 2013
132
0
10,710
Both the OEM RAM and this Value Ram have latency at 11-11-11 vs. 9-9-9. Is this academic or perceivable in real world performance?

UPDATE: I did some poking around to determine the difference in performance is 1% - 2%... so more or less academic, particularly since the alternatives to gain that 1% - 2% would be costly and may require experimentation to determine what other RAM may play nice with the Dell system at 800Mhz.