24GB DDR3 and Windows 7 - Benchmarks and Final Thoughts

Article Index
24GB DDR3 and Windows 7
Installation and Setup
VMWare and Memory Usage
Benchmarks and Final Thoughts
 

Benchmarking - Everest:

Because there is a lot of system tweaking that goes along with clocking up memory to non-standard speeds, we haven't included any "real-world" benchmarks.  In order to get the memory to run at speeds other than 1066MHz, 1333MHz, 1600MHz or 1866MHz the motherboard bus and CPU must be clocked up in order to achieve these speeds.  As we've shown before the CPU plays a huge roll in benchmark performance and so it's not fair to compare results when the CPU is clocked faster.  Of course the "RAM" will look faster, but in reality the CPU is the one doing the work.

For this reason we use two simply synthetic benchmarks to show memory performance.  How it affects performance in the real-world will depend largely on CPU, motherboard and other hardware bottlenecks so we have to be content with synthetic benchmarks to gain our number metric.  First up is Everest ran at the marketed CL9 settings.  We've included the results of a 1600MHz Ballistix Tracer Kit for reference.

Everest

 

As you can see above, the results between the two kits aren't radically different and performance looks very solid for the 24GB kit.  With that in mind, we'll take a look at SiSoft Sandra.

 

Benchmarking - SiSoft Sandra:

If you want to compare your triple-channel DDR3 performance, you can head on over and grab SiSoft Sandra here and compare away.  Please keep in mind that if you are using a dual-channel kit, your performance numbers will look dismal.

 SiSoft Bandwidth
SiSoft Bandwidth
 SiSoft Latency
SiSoft Latency

 

SiSoft tells a different story than Everest however.  The performance according to SiSoft is much lower on the 24GB system and this is why you cannot trust every synthetic benchmark.  One of these is true and the other is skewed.  The real results can only be measured in real-world performance and we've seen the system more responsive with massive loads on it with 24GB of memory.

 

Final Thoughts:

While this certainly hasn't meant to be a full review of a 24GB kit of memory, it is a bit of an eye-opener.  I never thought that I'd be able to load up a system and still be able to do everything I wanted to do - and do it fast.  Having 24GB of DDR3-1333 in this system enabled me to allot large amounts of RAM to each Virtual Machine in order to maximize the performance of each client - all while maintaining enough memory for the host Operating System to function at full capacity.  I was able to edit HD Video in Premiere, play games, use Photoshop and Lightroom to combine HDR photos, and still never suffered a slow-down due to running out of memory.  At times, I've had slow-downs with 6GB, but with 24GB, all these issues were gone.

Keep in mind that this large bundle of memory comes at quite an expense.  First, you'll have to be running a Core i7 system that supports six memory slots.  Second, you'll have to be able to spare an extra $1000 for the memory, and third - you should make sure that your motherboard is capable of running that much memory.  Finally, you'll obviously need to run a 64-bit OS so that you can address all that memory.  If you need 24GB of memory, it is possible without actually spending a fortune on RAM or a high-end server board.  That is good news.

We will have this memory for a little while longer so if you have any specific tests you'd like to see posted, please let us know.  All of your comments and feedback are welcome at the "Comments" link below.