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I'm currently using a razer deathadder chroma with an ss qck hyperbeast mouse pad ,a very colorful mouse pad.i found out that the mouse not very precise in csgo. So,like the topic,my question is i'm having problem with my mouse or my mouse pad?

Should i update my z1 compact to the 5.1.1 ? Many people complain about camera issues after update to 5.1.1, lag, ... I know that 5.1.1 is better at ram management but is there any issues about 5.1.1 for my z1 compact ?

Actually they are the same. The only different is there is no led on pc bang edition and the box feels a little bit cheap but they use same sensor which is great.I'm from Vietnam BTW

the cheapest 4460 i could find is $160 and the 2600k is $134. Otherwise the core i7 2600k is better according to passmark, futuremark scores and http://cpu.userbenchmark.com/Compare/Intel-Core-i7-2600K-vs-Intel-Core-i5-4460/621vs2310 and http://www.cpu-world.com/Compare/423/Intel_Core_i5_i5-4460_vs_Intel_Core_i7_i7-2600.html the 2600k is still an powerful cpu tho

Yup! I think the core i7 920 is really old too. Going for 2600k and rx 480.

I didn't find any good deal for 7970 but i found a r9 280x (the same as hd 7970) for around $116. And a core i7 920 plus an msi x58 pro mobo for $110 . Could them be paired together without bottleneck? If i'm right it could.

Thanks! I'll wait.

I want to know which is better because i found a local deal which offer an used xfx hd 7990 triple d for $200 . Is that a good deal ?I'm concern about performance.Both are around $200.I am going to pair both with the core i7 2600k is that ok?