umm NO sorry but its not (that i know of) but it can be overclocked i wish it could be upgraded tho
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AMD Athlon 64 3000+ @ 1.9ghz, RaidMax X-1, 520W RaidMax PSU, 1GB A-Data DDR400 Ram, DL-16x LG DVD Writer, Gigabyte GA-K8N-SLI, 200GB Sata, 2x 20GB PATA 1x 40 PATA, Nvidia 6600 256mb