Closer Look at OCZ DDR2 PC2-9200 Reaper HPC Edition
From the formal specifications standpoint, OCZ DDR2 PC2-9200 Reaper HPC Edition memory kit is very similar to other solutions designed to work at 1150MHz default speed. It includes two memory modules, 1GB each, that can and should be used in dual-channel mode, according to the manufacturer’s initial intention. They boast 2.3V nominal voltage. At this voltage setting they are claimed to work with 5-5-5-15 timings at 2T Command Rate, according to the official specification. In other words, the official specs of OCZ DDR2 PC2-9200 Reaper HPC Edition are exactly the same as those of the recently reviewed OCZ DDR2 PC2-9200 FlexXLC Edition. And they boast exactly the same manufacturer guarantees regarding the ability of these modules to work stably with the voltage increased to 2.35V during overclocking.
In other words, the cooling system with heatpipes is the only distinguishing feature about OCZ DDR2 PC2-9200 Reaper HPC Edition that immediately catches your eye. Its design is not so sophisticated. The module PCB with memory chips is covered on both sides with black-anodized aluminum plates with nit very deep ribbing. These plates are closing in above the PCB pressing against a copper heatpipe going through a special groove. This heatpipes transfers heat from the upper side of the plates to the additional aluminum heatsink located right above the module. The heatsink is pretty small, with cross-shaped cross-section and is threaded onto the upper part of the heatpipe.
All in all, this cooling system looks very impressive, so far no one has used heatpipe technology for memory modules cooling. However, if you think about it, then OCZ Reaper HPC concept may seem not very reasonable from the practical standpoint. In this case the heatpipe you see will look more like a popular overclocking accessory of this season that should be present on any overclocker-related product. It is true, that heatpipes are usually used if the heated element cannot for some reason be equipped with a heatsink of adequate size. Thanks to their features, heatpipes allow to increase the distance between the cooled element and the heatsink that acts as primary heat-dissipating surface.
In case of OCZ Reaper HPC it is hardly that necessary to transfer the heat to a relatively small heatsink with not very large heat dissipation surface area. They could have achieved the same cooling effect by providing the plates on both sides of the DIMM PCB with deeper ribs or by making these plates taller.