[quote=yanhui95,Apr 30 2009, 09:35 AM]
[quote=8tvt,Apr 30 2009, 09:20 AM]
4770 using gdrr5
i mean does the 128 bit and 256 bit matters?
[/quote]
since u ask for it.. let's do the maths..
128bit vs 256bit (for 4770 n 4850 ram speed)
1byte = 8bit
4770
MEM speed : 3.2Ghz
128bit = 128/8 = 16 bytes
MEM Bandwidth : 3.2 x 16 = 51.2GB/sec
4850
MEM speed : 2.0Ghz
256bit = 256/8 = 32 bytes
MEM Bandwidth : 2 x 32 = 64GB/sec
just a little.. u OC u do the maths..
if 4770 can add more voltage.. since the core n ram using lower voltage..
will give more benefit later..
AMD use 128bit for a reason.. the pcb layout etc.. to cut cost..
since they can reduce the cost n not sacrifice the performance..
please be advised.. the core should have better tweak with some new features..
SO be wise.. the call is all yours..
AMD/ATI Radeon™ HD 4000 Series Discussion v6, The time moves on..Prepare HD5000 Series
Apr 30 2009, 10:45 AM

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