50+ Degrees Celsius While Gaming

Whenever I game, my computer gets really hot. I don't think I have enough fans to support my rig. My brother has about 1-2 more fans than me and when he's gaming, there is no temperature problem. How many more fans do I need so I don't have the temperature problem? I do believe he does have a better heatsink than me but other than that, the same rig.

My rig:

OS: Microsoft Windows 7 Ultimate 64-bit SP1

CPU: Intel Core i5 3570K @ 3.40GHz

RAM: 8.00 GB Dual-Channel DDR3 @ 666MHz (9-9-9-24)

Motherboard: ASUSTeK COMPUTER INC. P8Z77-V LX (LGA1155)

Graphics Card: NVIDIA GeForce GTX 660

Primary HDD: 233GB ClickIT OS Drive (RAID)

Storage HDD: 932GB Seagate ST31000525SV (SATA)

Optical Drive: HL-DT-ST DVDRAM GH24NS72

Power Supply: 450 Watt PSU

Case: Mid Tower - I don't know the exact model and manufacturer.

Parts used before: Power supply, Tower, and Primary HDD.

Edit: Heatsink - Thermaltake Slim X3 / Thermaltake Thermal Paste

Whenever my system is idle my computer is usually at these temperatures:

Whenever I game my system is like: I was playing Borderlands 2 on max settings when I took this.
4 answers Last reply
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  1. The obvious solution to me is too get an aftermarket heatsink for the CPU, as so far you haven't indicated that your not using the stock heatsink.
    Something like a Hyper 212 EVO is fairly good for its price ad is much better than stock.
    Coolermaster Hyper 212 EVO. $35

    As for whether case airflow is an issue, stress the CPU again but have the side panel off. If the temps improve significantly, then theres an airflow issue.
  2. I edited the original post, I don't use the stock heatsink. I use: Thermaltake Slim X3 / Thermaltake Thermal Paste. Should I still get that heatsink? Should I get more fans like my brother?
  3. Slim coolers don't perform much better than stock. Comes down to simple physics, need more surface area and metal to dissipate the heat.
    And looking at the design of the baseplate on it I can see why your getting 50c idle temps.

    Take the side panel off and run a game. If temps improve by a lot, then you know case airflow is an issue, so you should get more fans.
  4. Alright, i'll go test it now.

    I guess I need more fans and that heatsink.

    Idle: Core 0 jumps between 41-43.

    Gaming (Borderlands 2 Max):
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