• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

Does Low Latency Memory Improve System Performance by a meaningful amount?

Tom's HW Guide published an article comparing how various hardware platforms performed at various memory timings. They concluded that memory timings no longer contributed a lot to system perfomance.

They compared a P4 3.2 EE system to a P4 3.2 system to an Athlon 3.2 FX-51 system to an Athlon 64 3.2 system to an Athlon XP 3200+ system. Their results compared memory operating at 3 timings; 2-2-2-5, 2.5-3-3-6, and 3-4-4-8.

The best results (IMO) showed that using lower latency memory enabled a P4 3.2 to out-perform a P4 3.2 EE by one second.

The P4 EE spread in tenths of seconds between 2-2-2-5 and 3-4-4-8 for encoding 1.2 GBs of DV to MPEG-2 (DVD) at 720x576 at 25 fps was 3.6 seconds. (Fewer seconds are better. )

Best score; P4 3.2 EE, 172.5 seconds at fastest memory timings to 176.1 seconds at the slowest memory timings with 1 GB of installed memory.

Worst score; Athlon XP 3.2, 224.9 seconds at fastest memory timings to 227.6 seconds at the slowest memory timings with 1 GB of installed memory.

Nicest discovery: P4 3.2, 175.1 seconds at fastest memory timings to 178.0 seconds at the slowest memory timings with 1 GB of installed memory. (a 3 sec faster EE ain't worth the price of admission IMO)

So, reliable memory which does not fault and cause fatal errors is still critical; BUT, low latency memory can save you only about 4 seconds for every three minutes of time spent performing memory intensive tasks.

OR, citing their 32-bit color UT2003 at 1024x768 results

Low latency memory is worth an extra 4 (four) fps in systems that generate 214 (Athlon XP) to 284 fps (Athlon 64 FX-51).

My conclusion, ultra fast low latency memory is not worth as much as a faster (or more capable) processor, or platform.

Was there much discussion of this topic closer to when it was originally published, January 19, 2004? Did THG screw up? What is low latency memory worth beyond bragging rights?

 
It allows me to overclock my system using the tightest timings. I put a lot of money into my passion (see sig), and I want to make sure that what I've produced is the best that I can make it within reason. I run Corsair XMS3200LL @215 (2-2-2-5) and I wouldn't want it any other way.
 
I think it is worth it to get decent timmings but many of the modules thwith ultra tight timmings are not worth the extra price premium that manufacturers are charging. I think it is a much better idea to get say decent speed ram and add 50 bucks to your video card instead of really fast ram and get a slower card.

For people that are only buying top end products and don't really care about the money yeah it is probably worth it to them to get a few more fps in some games. I personally am a broke college kid so its not worth it to me 😉
 
I have noticed that lowering the latencies on my memory made very little difference in benchmark scores (going from 2.5-3-3-7 to 2-2-2-6). That is on an NF-2 with XP2400-M @ 2.5 GHz.

Since then I left the CAS at 2 but moved everything back up for better stability.
 
Back
Top