ultimate99 Posted April 1, 2014 Share Posted April 1, 2014 My laptop came with a 4gb 1.35v ram and I want to upgrade to 2x8gb ram. However, I find that 1.5v tend to be cheaper than 1.35v. Why is that? Any real world difference in performance? Link to comment Share on other sites More sharing options...
Luc2k Posted April 1, 2014 Share Posted April 1, 2014 They laptop will last longer on battery most likely and the memory should release less heat, but I'm not sure of the actual stats. Link to comment Share on other sites More sharing options...
snaphat (Myles Landwehr) Member Posted April 2, 2014 Member Share Posted April 2, 2014 There's not going to be a performance difference. Spec's are specs in that regard. You need to make sure your laptop is compatible with whatever voltage you get though. Link to comment Share on other sites More sharing options...
ultimate99 Posted April 2, 2014 Author Share Posted April 2, 2014 There's not going to be a performance difference. Spec's are specs in that regard. You need to make sure your laptop is compatible with whatever voltage you get though. Well, i think both, as I have 2 in, one 1.5v and the other 1.35v. So I guess I could go with the cheapest 1.5v. Link to comment Share on other sites More sharing options...
Luc2k Posted April 2, 2014 Share Posted April 2, 2014 Well, i think both, as I have 2 in, one 1.5v and the other 1.35v. So I guess I could go with the cheapest 1.5v. That probably means they're both running at 1.5v. Link to comment Share on other sites More sharing options...
Jason S. Global Moderator Posted April 2, 2014 Global Moderator Share Posted April 2, 2014 That probably means they're both running at 1.5v. i agree - theyre probably both running at 1.5v. i'd just go w/ the cheaper stuff if youre upgrading. ive never seen benchmarks, but i'd be very curious about what impact on battery life the 2 specs would have. Link to comment Share on other sites More sharing options...
snaphat (Myles Landwehr) Member Posted April 2, 2014 Member Share Posted April 2, 2014 i agree - theyre probably both running at 1.5v. i'd just go w/ the cheaper stuff if youre upgrading. ive never seen benchmarks, but i'd be very curious about what impact on battery life the 2 specs would have. It's going to be 1-2W difference @ load and <1W @ non-load per dimm. So how much of a difference it makes would depend on the laptop. For example, mine has a 16W TDP and uses 11-13W typically. So you could get a difference in power consumption of ~7-30% (because even a single Watt is considerable difference). see: http://www.servethehome.com/testing-power-savings-low-voltage-135v-kingston-memory-intel-avoton/ goretsky 1 Share Link to comment Share on other sites More sharing options...
ultimate99 Posted April 3, 2014 Author Share Posted April 3, 2014 The bigger the latency the better? Cas Latency: 9 Timing: 9-9-9-28 $176 vs Cas Latency: 11 Timing: 11-11-11-28 $180 Link to comment Share on other sites More sharing options...
Jason S. Global Moderator Posted April 3, 2014 Global Moderator Share Posted April 3, 2014 The bigger the latency the better? Cas Latency: 9 Timing: 9-9-9-28 $176 vs Cas Latency: 11 Timing: 11-11-11-28 $180 no, latency means 'delay'. you want lower latency (less delay) http://en.wikipedia.org/wiki/Cas_latency gohpep 1 Share Link to comment Share on other sites More sharing options...
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