DDR3 Memory Round-Up: Corsair, Kingston, OCZ, Super Talent
Stock Performance (Cont.)
For our next round of benchmarks, we ran the Memory performance module built-into Futuremark's PCMark05. For those interested in more than just the graphs, we've got a quote from Futuremark that explains exactly what this test does and how it works...
"The Memory test suite is a collection of tests that isolate the performance of the memory subsystem. The memory subsystem consists of various devices on the PC. This includes the main memory, the CPU internal cache (known as the L1 cache) and the external cache (known as the L2 cache). As it is difficult to find applications that only stress the memory, we explicitly developed a set of tests geared for this purpose. The tests are written in C++ and assembly. They include: Reading data blocks from memory, Writing data blocks to memory performing copy operations on data blocks, random access to data items and latency testing."
The memory performance module included with PCMark05 is also influenced by the CPU's clock speed, as is evidenced by the OCZ kit outperforming Corsair's despite a 200MHz clock speed defecit.
We continued our testing with some low-resolution F.E.A.R. tests. Despite the fact that this is a game benchmark that can be used to test the relative performance of video cards, frame rates are strongly influenced by processor speed and available memory bandwidth, especially at low resolutions, which is how we ran the tests to get the frame rates listed below.
The CPU's clock speed also played a major role in our low-resolution F.E.A.R. benchmarks, wher the OCZ OCZ3P1600EB2GK and Super Talent W1600UXG7 finished first and second, respectively. This test is also heavily influenced by CAS latency, which the Kingston vs. Kingston comparison proves. The CAS 5 KHX11000D3ULK2/2G kit finished the test 17 FPS ahead of the CAS 7 KHX11000D3LLK2/2G kit.