Articles: Mainboards

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The practical tests of the DFI LANPARTY PRO875B overclockability consisted of my attempts to speed up an Intel Pentium 4 2.4C processor (rated for work with 200MHz FSB). I have to admit that the mainboard confirmed its positioning as a good overclocking solution, as I managed to raise the FSB frequency by a half – to 300MHz – without even raising the CPU Vcore. I just pushed up the FSB frequency, having set the memory frequency devisor to 3:2 and fixed the AGP/PCI frequencies at 66/33MHz. Thus, the DFI LANPARTY PRO875B is surely an excellent platform for CPU overclocking as it has no problems whatever at high FSB clock-rates. The processor with a regular frequency of 2.4GHz worked at 3.6GHz, and again, I can’t say anything negative about the stability of the overclocked system throughout our tests.

The second part of my overclocking session carried out for DFI LANPARTY PRO875B was dedicated to its work with the memory subsystem. I took the same processor and PC4000 DDR SDRAM from OCZ. I steadily increased the FSB frequency synchronously with the memory frequency using the standard timings of this memory (3-3-3-8) and having set Vmem to 2.8V. I went as far as 261MHz FSB, when the system started losing its stability. Recalling my previous experience with this memory, I should say that this is the maximum frequency this memory can work at. So, DFI LANPARTY PRO875B proved perfectly stable at memory bus overclocking, too. Summing up, my practical tests proved that this mainboard has an excellent overclocking potential.

Besides the Genie BIOS Settings page of the BIOS Setup, the Advanced Features Setup page is interesting, too. It stores the options for controlling the memory timings. You can change DRAM CAS# Latency (possible values – 2, 2.5, 3), DRAM Precharge Delay (5, 6, 7 and 8), DRAM RAS# to CAS# Delay and DRAM RAS# Precharge (2, 3 or 4). Overall, we have a standard set of options. Regrettably, such parameters as Refresh Cycle Time, Read Delay (tRD), Read Delay Adjust (tRDA) and Command Per Clock (CPC) that do affect the system performance cannot be changed in any way.

This page also features the exclusive setting from DFI, System Bandwidth, which can take the following values: HPS3, MPS1, MPS2, LPS1, LPS2, LPS3 and Disabled. This mysteriously-looking option actually allows you choosing one of the available presets to configure the memory subsystem at a stroke. HPS3 is the most aggressive preset, while LPS3 is the slightest one. If you disable this option, you will be free to change each memory parameter at your own wish.

I would definitely like to mention the available hardware monitoring feature. The hardware monitoring capabilities of the DFI LANPARTY PRO875B allow keeping track of the CPU and system temperatures, rotation speeds of three fans, and all the voltages (eight in total).

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