Posted 01 April 2009 - 01:49 PM
the things to look for are A: clock speed, B: cache size, C: cache levels, D: architecture. is it phenom I, II. Like fairjoe said, the OEM doesnt come with the heatsink while the retail edition of the same CPU would, the black editions have unlocked multipliers for overclocking, the open box ones are simply CPUs that have been purchased and returned by another buyer for whatever reason, and then tested by newegg and put back on the shelf at a lower price, and usually a shorter warranty. You also need to make sure your motherboard will support it. the 9850 uses AM2+ socket type. It should (in theory) work on a regular AM2 socket, but it will not run at the 5600 mhz FSB that it was designed to but will only run at the 2000 MHZ FSB, that is if it works at all. some AM2 Motherboards will support AM2+ with a bios update, so make sure you check out those options if your board does not support AM2+ natively. as far as that particular CPU, it runs at 2.5 ghz with a 4 x 512k level 2 cache, and a 2 mb level 3 cache that is shared by all 4 cores. its a decent little quad, but not likely to give you the performance of a higher end Phenom or most intel quads.
Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit.
Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.
If I don't reply within 24 hours of your reply, feel free to send me a pm.