I have a dg965ry Intel motherboard, will it support a new ATI RADEON 4890 ?
Also - do you think it is a wise choice to buy the (SAPHIRE)ATI RADEON 4890 given that i have an intel core 2 1.86 GHZ processor and 2 GB RAM? my main goal is to get better performence in games, especially in GTA 4 which I have to run in minimum graphics and it has ALOT of problems with my current Radeon x1950 (freezing, invisible walls etc..) but also other shooters, sport games like PRO EVO 2009 and NBA2K9 are running decently on my current system as it is.
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The board you have has a PCI-E 16x slot which combined with the CPU you have will bottleneck a 4890. If you can't overclock with the board you have I would suggest buying an inexpensive P35 or P45 board with a PCI-E 2.0 16x slot and a good CPU cooler and overclock your CPU. If you can't afford a cooler, new board and the 4890 I would suggest switching the 4890 for a 4870 and still replace the others. A 4870 with a new board and overclocked CPU would give you better performance than a 4890 with what you currently have.
A E6300 overclocks fine with a stock cooler. You can OC it to 2.4GHz with just the intel fan and keep it within a good temperature range.
It might be the older E6300 which is 65nm with 2mb L2 cache. It might be the E6350 which is 65nm with 4mb L2 cache. Either of those would be ok with the stock cooler but I would still suggest an aftermarket cooler. The new E6300 is a 45nm part and that would be fine with the stock cooler. It just really depends on which chip he has.