OCZ EL DDR PC-4800 Dual Channel Platinum at Work
The technical characteristics of the reviewed memory modules look very attractive. Of course, DDR-1 memory that can work at 300MHz is not something you see everywhere. Especially, since this memory works with quite aggressive latencies (for this frequency). Moreover, since OCZ EL DDR PC-4800 Dual Channel Platinum is based on Samsung TCCD chips, it should also work fine at 200MHz frequency with even more aggressive timings. Therefore, we thought it would be really interesting to see how well this memory would do with different latency and frequency settings.
For our tests we assembled the following system:
- AMD Athlon 64 3800+ CPU (Socket 939, 2.4GHz, 512KB L2, Venice);
- DFI NF4 Ultra-D mainboard (Socket 939, NVIDIA nForce4 Ultra);
- PowerColor RADEON X850 XT (PCI-E x16) graphics card;
- Maxtor MaXLine III 250GB (SATA150) HDD;
- Microsoft Windows XP SP2 OS.
Our testing was aimed at figuring out the top frequency when OCZ EL DDR PC-4800 Dual Channel Platinum would retain stability with different timing settings and voltage settings. We tested the memory stability by running 3DMark 2001 SE and 3DMark05 benchmark packages, which create heavy workload on the memory subsystem, as well as SuperPi benchmark and MemTest86+ utility. Memory Timing parameter was set to 1T at all times.
As we see, OCZ EL DDR PC-4800 Dual Channel Platinum memory modules are pretty flexible. Besides excellent flawless work at frequencies exceeding 300MHz, they also ran just fine at 200MHz with the most aggressive timings. Although in the latter case we had to increase the Vmem to 2.8V, which far not all mainboards support. However, 2.8-2.9V is the nominal voltage for these memory modules, so your mainboard choice may already take that into account.
With the nominal timings set to 2.5-4-4-10, OCZ EL DDR PC-4800 Dual Channel Platinum could work at 313MHz frequency and 2.9V voltage. However, even with the voltage set to 2.7V these modules proved stable at 300MHz frequency. The maximum frequency we managed to make our memory modules work at was 322MHz with the timings set to 3-5-5-10. The CPU-Z screenshot below proves our results:
So, OCZ EL DDR PC-4800 Dual Channel Platinum is a universal memory solution that will satisfy the very diverse needs of the broad overclockers’ community. However, the major strength of this product is exactly its ability to work at high frequencies, which can be very helpful during synchronous overclocking of the CPU and the memory. For example, if you have OCZ EL DDR PC-4800 Dual Channel Platinum in your system, you will be able to increase the clock generator frequency of your Athlon 64 processor to 300MHz without raising the memory frequency divider.
Here i would like to mention one more peculiarity of the memory we were testing. When working at high frequencies (such as the nominal 300MHz, for instance), these modules heat up too much. For example, when we were running the tests in an open stand with the modules working at 300MHz frequency and 2.8V Vmem, they got 60oC hot.
It means that when these modules are used in a closed system case, you might need to take care of some additional cooling.