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The best memory upgrades for your Compaq Pavilion Desktop A A63 Series A636N Desktop!

We've spent years amassing all the information we need to make sure you get the right memory for your Compaq Pavilion Desktop A A63 Series A636N Desktop. We guarantee this memory will work in your machine for the life of your machine. Your Compaq Pavilion Desktop A A63 Series A636N supports up to 4 GB in four slots and modules must be installed one at a time.

Install in matched pairs to utilize Dual Channel mode. Compatible with upto 400MHz modules. Mixing module speeds will default to the lowest speed. 

  Code OEM DescriptionCapacityKit OfPriceinc VAT 
expand   DIMM
1GB 2.5V DDR Unbuffered PC400 x64 DIMM 184pin DDR 9985 1031478 9985 1GB 2.5V DDR Unbuffered PC400 x64 DIMM 184pin DDR 1GB1 £22.93 £27.52 Buy
512MB 2.5V DDR Unbuffered PC400 x64 DIMM 184pin DDR 9960 1031477 9960 512MB 2.5V DDR Unbuffered PC400 x64 DIMM 184pin DDR 512MB1 £12.40 £14.88 Buy
256MB 2.5V DDR Unbuffered PC400 x64 DIMM 184pin DDR 9945 1031476 9945 256MB 2.5V DDR Unbuffered PC400 x64 DIMM 184pin DDR 256MB1 £7.40 £8.88 Buy

More information about this machine

Detailed machine info

Install in matched pairs to utilize Dual Channel mode. Compatible with upto 400MHz modules. Mixing module speeds will default to the lowest speed.

Is base memory removeable?y
Number of memory slots4
Number of memory banks4
Number of modules per bank1
Maximum installable memory4

Original Memory Configuration

more about your Compaq Pavilion Desktop A A63 Series A636N machine
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