Is my CPU bottlenecking my GPU?

Hey guys, so i recently upgraded my ram from 4g to 8g and my GPU from a single 5870 to a 7970. Below and my speccs, just curious if its time to upgrade my CPU.

Operating System
MS Windows 7 Ultimate 64-bit SP1
CPU
Intel Core i7 860 @ 2.80GHz 51 °C
Lynnfield 45nm Technology
RAM
8.00 GB Dual-Channel DDR3 @ 668MHz (9-9-9-24)
Motherboard
ASUSTeK Computer INC. P7P55D PRO (LGA1156) 43 °C
Graphics
SyncMaster (1920x1080@60Hz)
AMD Radeon HD 7900 Series

PS: On a side note, i understand this is not the right place to post it. By with my ram upgraded ive noticed my ram usage has increased, where i used 3-3.5g i know use 4-4.5g. Is this normal?
2 answers Last reply
More about bottlenecking
  1. The ram use isn't normal I don't think as I never seen that from a gpu upgrade. Unless you upped settings in games or something.

    the cpu is fine.
  2. Yeah, just wait til Haswell!
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