Quote:
Originally Posted by Ramza
Ok. I thought the 5670 would be more of a hog than the 4870 and not vice versa, based on their model numbers?
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Ugh! Don't fall for that old chestnut

Bigger != better!
The first digit of a graphics card usually depicts
generation. Newer generations are incrementally more powerful than predecessors, more feature-rich (e.g. DX11, HD decoding...) and more power-efficient relative to raw processing power (due to manufacturing process - we're currently on 40nm, 55nm was the last one, and yes, those are
nanometres

). So a HD
5670 is newer and better than a HD
4670.
Second digit depicts
family and to a degree
usage. So a HD*2*0 is a basic GPU usually integrated in a mobo chipset, a HD*4*0 is oriented to multimedia and sucks at gaming, a HD*6*0 has a full multimedia featureset and is good at low-res gaming, a HD*7*0 is a mid-range card for general gaming and a HD*8*0 is a fairly high-end gaming GPU for high resolutions. Similar-ish system for 4-digit nVidia cards, the 3-digit ones out now mix it up a bit
Third digit represents
tilt or
position/hierachy within the family. For example a HD58
50 is a badass gaming card. A HD58
70 is an extremely badass gaming card and a HD58
30 is still a fairly badass gaming card.
So, overall a HD5670 is the current low-end gaming card. By comparison a HD4870 is the last generation's badass gaming card. Being older and less efficient
and having twice the firpower under the hood relative to the little HD5670 can you even begin to guess at the difference in power consumption?
And those PSU guidelines are there to protect those out there who a) have some insane OCd i7-975 rig with half a dozen HDDs from pushing their PSU a bridge too far
or b) those loveable rogues who have no idea about PCs and have bought a replacement PSU from eBay for a tenner and think its a 500W PSU when in actual fact its an old P4 PSU that's not designed for crazy 12V loads and demanding more than 150W actual 12V power will cause the rig to
melt
I'm guessing you have the original PSU from the PC which are always "real" PSUs and are fairly solid to avoid giving users any excuse for demanding repairs/refund at any point during the extended warranty. I somehow doubt your Socket 939 rig is using buttloads of power and the HD5670 will realistically stay south of 30W for anything bar FurMark or its alter-ego, Crysis

Off the top of my head a 6600GT uses ~40W and I've used one on decent OEM 240-250W PSUs that came with my old Athlon rigs back in the day so I'm pretty sure the HD5670 won't cause any crash-n-burn. Even if it did, the PC would simply shut down and restart if its not one of those junk PCs off eBay. And those
always come with a "600W" (yeah, right!) PSU rather than an honest-to-God 250-300W FSP/Enhance/HiPro/Delta
For SnG
look at this when you have a minute and see what the Delta does compared to the eBay fodder...