EXCLUSIVE: New Microserver model limited to 16GB ECC RAM, adds 1600Mhz support

Based on events of the last 36 hours, I have been leaked a few very interesting pieces of information regarding the upcoming HP Microserver G8 which is due for release very soon. It seems that not everyone within HP and their contractors are happy with the way that HP has handled the leak on specifications yesterday.

Within the community, possibly the second most asked question by Microsavants is “Will the new G8 support more than 8GB of RAM?”

This question has been asked relentlessly in fora all over the intertubes. While the G7 range of Microservers officially supported a maximum 8Gb of 1333Mz DDR3 unbuffered ECC RAM, there was certain RAM modules which were compatible ‘enough’ so that 16GB of RAM was detected on boot, and a fantastic database of working modules was maintained on the Microserver Wikia page. While most of the Microserver units seemed to work okay, there were just some that would never see 16GB and would only detect and use 8GB of RAM.

For most ESXi users, the difference between having 8GB or 16GB usable was around 4-5 Virtual machines per box on 8GB, or 10-12 virtual machines if you could get 16GB working. In a virtualisation sense, the difference is huge.

So in the last 24 hours, we have been lucky enough to receive the Microserver G8 System Diagram from an internal HP source. While there is more to this diagram, we are only publishing a small amount of it in case of traceability and to protect our source.

G8_Microserver_16GB_Support

As you can see, there will be two memory channels off the integrated Intel CPU memory controller each running a single DDR3 slot on the motherboard for a total of two RAM slots. The G8 Microserver maintains the G7 support of 1300Mhz DDR3 in either normal desktop SDRAM or unbuffered ECC. The G8 increases the memory speeds to 1600Mhz, and takes official memory capacity to 16GB.

This is excellent news, those upgrading will be able to transfer their previous 16GB kits into the new G8 units, on the proviso that they have enough physical clearance between other components in the new model. Those that purchased the 16GB 1333Mhz ECC kits from Kingston or Crucial should see a straight swap with zero issues.

Of course, until we get the new units in our hands we cannot test and see if 32GB of memory in the unit would work. That said, remembering that since this is a relatively cheap machine to purchase, the idea of buying 16GB DDR3 ECC DIMMs seems rather expensive as these are most definitely a enterprise server part and commands a premium price.

In any case 16GB is supported, which for some will be comforting and a bonus if their G7 never quite got to 16GB. For others it will be a disappointment as it is no real improvement on their G7. Put your comments below!

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