What should i buy ati radeon hd 5770 or radeon hd 6790? my budget is till 14000


Nov 1, 2011
I have seen that the radeon hd 5770 has slightly better Gpixel/s and Gtexel/s but radeon hd 6790 has greater memory bandwidth. Please help me.



Aug 27, 2011
5770 is better in performace wise because 5770 has

Model Radeon HD 5770 Radeon HD 6790
Manufacturer ATi ATi
Year October 13, 2009 April 2011
Code Name Juniper XT Barts LE
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 850 MHz 840 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1200 MHz 1050 MHz
Unified Shaders 800(160x5) 800
Texture Mapping Units 40 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1
Power (Max TDP) 108 watts 150 watts
Shader Model 5.0 5.0
Bandwidth 76800 MB/sec 134400 MB/sec
Texel Rate 34000 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 13600 Mpixels/sec 13440 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

but 6790 is not a bad choice

imo 5770 is better. if you can get a 6850, get that instead of the 6790. 6850 performs better for its tdp(thermal design power).


Erm am I missing something here? The HD6790 is much faster than a HD5770. And this should be a no brainer.




Source: http://www.tomshardware.com/reviews/radeon-hd-6790-barts-gpu-geforce-gtx-460,2917.html


Umair Ahmedfi

Nov 1, 2011
okkk what about hd 4890 i heard it was better than hd 5770. and if i buy hd 6790 can i play games like assassins creed brotherhood and battlefield3?

Harith Aslam

Sep 3, 2011
" UMAIR as in HAFIZ...kaisa hai yar....i got my 6850 for 17500 an its an XXX version...try on shophive.com and myshop.com.pk to see if u get good hits for 14000