Memory's 2GB low latency PDC32G1600LLK DDR3-1600 will be installed in a
fantastic overclocking platform, the Asus BLITZ Extreme motherboard and an
engineering sample Intel Core 2 Duo
E6750 processor. With
hardware this good, I think we can anticipate some exciting overclocking.
Patriot Memory's PDC32G1600LLK DDR3-1600 kit runs on 7-7-7-18 memory timings at
1.8V, so the first step is to see how far we can overclock here.
The memory frequency was increased in 20
MHz increments and the Patriot PDC32G1600LLK memory ran into its first roadblock
at 1660 MHz. The memory voltage had to be increased to 2.0V to keep the system
stable. That seemed to do the trick and the Patriot memory reached a nice 1800 MHz before the memory started to become unstable
again. Increasing the memory voltage to 2.1V fixed that issue and allowed the
memory to clock higher.
PDC32G1600LLK reached a maximum speed of 1820 MHz with 7-7-7-18 timings which is
pretty darn good. Anything higher though and the memory would cause the system
to crash while running 3D benchmarks. Lowering the memory timings to 8-8-8-24,
we're about to see how high the memory can run with lax timings.
memory timings the Patriot memory overclocked quite a bit farther. The 1900 MHz
mark easily fell but the memory wasn't able to go much further hitting its
maximum speed at 1940 MHz. That's still not bad all things considered, this is
supposed to be "low latency" DDR3 memory after all.
Prelude to Benchmarks
The details of how the Patriot Memory PDC32G1600LLK
DDR3-1600 memory test system was configured for benchmarking, including the
specific hardware, software drivers, operating system and benchmark versions are
indicated below. In the second column are the general specs for the reference
platforms this pair of DDR3-1600 / PC3-12800 DDR3 memory is to be compared
against. Please take a moment to look over PCSTATS test system configurations
before moving on to the individual benchmark results.
Socket 775 Core 2 Duo test systems, we're only interested in seeing how high we
can go with the DDR3 memory running 1:2, as running with other dividers puts the
overclocking bottleneck elsewhere and not with the system memory. The DDR3 RAM
latency must run at its lowest possible setting, as quick access is more
important to the CPU design. Just for arguments sake, we will also be conducting
overclocking tests to see how high the memory will go with lax timings
(8-8-8-24). Benchmarks will be run with which ever state garners better
|PCSTATS Test System Configurations|