First of all, the temperature readings may not be accurate, but if you are getting anywhere near 35 degrees inside the case than that is probably where the problem lies. It suggests that your case ventilation is inadequate, which is quite common in older cases that were not designed for modern CPUs.
Try taking the side off the case and see if that lowers the temperature. If it doesn't, your temperature reading could be inaccurate.
You need to look at the AMD design guide for case cooling click here click here , but basically you need better ventilation. You may be able to mod the case depending on the case design and your ability.
The stock AMD coolers are OK but nothing special. You may choose to invest in a high quality cooler such as the Thermaltake Silent Boost A1889 click here