GTX 280 has 800 something GDDR3 memory.
4870x2 has 1024mb PER CORE, with mean if the cores got same job they can use 1024 each.. It is not locked some how.. sure its better if the cores could have accest to all of it toghetter.
And it is GDDR5 In much higher speeds then the gtx cards.. The memory in 4870 can not compare with it in the GTX 280. the Gddr5 memory is MUCH faster
http://www.komplett.se/k/ki.aspx?sku=396368
Here you got a 4850x2 for arround 300 euro
Wrong of me about how much power they needed.
![[Image: Effektfrbrukning002.png]](http://sweclockers.com/imagebank/plot/200807/Effektfrbrukning002.png)
Remember, this is for the WHOLE SYSTEM, not just the graphiccards.
with hd4850 Crossfire it takes 310W full load
with gtx 280 the system takes 278 full load
Not so big diffrent.
Here you got some stats just for fun:
![[Image: CallofDuty4DX9001.png]](http://sweclockers.com/imagebank/plot/200808/CallofDuty4DX9001.png)
The 4850 / 4870 CF pwns gtx 280 quite hard.
4870x2 has 1024mb PER CORE, with mean if the cores got same job they can use 1024 each.. It is not locked some how.. sure its better if the cores could have accest to all of it toghetter.
And it is GDDR5 In much higher speeds then the gtx cards.. The memory in 4870 can not compare with it in the GTX 280. the Gddr5 memory is MUCH faster
http://www.komplett.se/k/ki.aspx?sku=396368
Here you got a 4850x2 for arround 300 euro
Wrong of me about how much power they needed.
![[Image: Effektfrbrukning002.png]](http://sweclockers.com/imagebank/plot/200807/Effektfrbrukning002.png)
Remember, this is for the WHOLE SYSTEM, not just the graphiccards.
with hd4850 Crossfire it takes 310W full load
with gtx 280 the system takes 278 full load
Not so big diffrent.
Here you got some stats just for fun:
![[Image: CallofDuty4DX9001.png]](http://sweclockers.com/imagebank/plot/200808/CallofDuty4DX9001.png)
The 4850 / 4870 CF pwns gtx 280 quite hard.