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Ends today. Newegg has the GIGABYTE GV-R645SL-1GI Radeon HD 6450 1GB 64-bit DDR3 PCI Express 2 for $43 - $20 rebate [Exp 5/25] = $23 with free shipping.
$23
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All my Dell's have less than the stated 400w minimum PSU requirement. Seems kind of high for a fanless.
If you don't use it for gaming, you might be able to get away with less (say 350), but you run the risk of it freezing up on you randomly. I bought this a few months ago, works great for an HTPC for video streaming and Media Center. Never got my rebate though (claimed they received an empty envelope).
Well AMD recommendations are always super overstated, and I can’t figure why they do. Sure if you have multiple HDD, and other peripherals added onto the original configuration then yes you’ll need to take those into consideration.
This card has a TDP of 18W; an idle of 5W and maximum of 15W and the chance of stressing it to that for any length is really quite infrequent, unless yes gamming but then that's a different thing.
Consider that a GT520 has a TDP 29W; idle of 7W, while it looks to have a 32W maximum, which (take with a grain of salt) is shown by this chart that show a relationship of power draw of probably every card ever. I have found this information almost always trustworthy and good real world equivalence.
http://forumsbaconomicmpc.com.au/index.php?showtopic=264
Here's the thing, a GT520 is stated by Nvidia as requiring a "minimum PSU of 300W", while AMD is stating theirs as recommendation "400 Watt or greater power supply recommended". There the difference and the truth is this 6450 can be used with as little as a 250W PSU as long as it is a quality unit like what Dell, HP, Lenovo would equip OEM boxes with and you don't have extra high watt stuff added on.
The major concern other than just a quality PSU, is good airflow/cooling especially say in a SFF type chassis. You want the additional heat from such passive cooled card not to place any additional heat load within the chassis or have it affect the PSU by increasing the temperature the PSU is operating under. You can run such a card with such lower watt PSU's no problem, but I suggest considering to extra heat load by both the card and supplementary power strain to be addressed for superior longevity.