Join Us On Facebook

Compare any two graphics cards:
VS

Radeon HD 6850 vs Radeon HD 7770

Intro

The Radeon HD 6850 makes use of a 40 nm design. AMD has set the core speed at 775 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this card. It features 960 SPUs along with 48 Texture Address Units and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 7770, which comes with core speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770 80 Watts
Radeon HD 6850 127 Watts
Difference: 47 Watts (59%)

Memory Bandwidth

Performance-wise, the Radeon HD 6850 should in theory be a lot superior to the Radeon HD 7770 in general. (explain)

Radeon HD 6850 128000 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 56000 (78%)

Texel Rate

The Radeon HD 7770 is just a bit (about 8%) better at anisotropic filtering than the Radeon HD 6850. (explain)

Radeon HD 7770 40000 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 2800 (8%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6850 is superior to the Radeon HD 7770, by far. (explain)

Radeon HD 6850 24800 Mpixels/sec
Radeon HD 7770 16000 Mpixels/sec
Difference: 8800 (55%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Radeon HD 6850

Amazon.com

Radeon HD 7770

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model Radeon HD 6850 Radeon HD 7770
Manufacturer AMD AMD
Year October 2010 February 2012
Code Name Barts Pro Cape Verde XT
Fab Process 40 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 1024 MB 1024 MB
Core Speed 775 MHz 1000 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1000 MHz (4000 MHz effective) 1125 MHz (4500 MHz effective)
Unified Shaders 960 640
Texture Mapping Units 48 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2
Power (Max TDP) 127 watts 80 watts
Shader Model 5.0 5.0
Bandwidth 128000 MB/sec 72000 MB/sec
Texel Rate 37200 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 24800 Mpixels/sec 16000 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 can be processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Comments

9 Responses to “Radeon HD 6850 vs Radeon HD 7770”
[...] PC My PC Specs Monitor: View Sonic 27inch LED CPU: Core i7 2600K Cooler: Cooler Master H50 Motherboard: Msi P67-AGD 65 B3 Memory: G.Skills 4GB GPU: MSI GTX 560Ti Hawk O.C HDD: W.D Cavier Black 1TB (INTEL 40GB SSD) Chassis: Haf X 942 PSU: TT 800W (ThermalTake) Soundcard: Creative Xifi-Titanium Fitality Pro OS: Windows 7 64-BIT My Achievements Total Achievements: 1 This one is help you a lot. Radeon HD 6850 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare [...]
[...] out these sites : Radeon HD 6850 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare & GeForce GTX 550 Ti vs Radeon HD 6850 – Performance Comparison Benchmarks @ Hardware [...]
[...] mismo renombrado y cambiado el hdmi a 1.4a en vez hdmi 1.3 Ahora pongo la 6850 frente a la 7770 Radeon HD 6850 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare Perdona pero decir que una 7770 es un reemplazo de la 5770 o 6770 es un insulto a nuestra [...]
[...] Posted by CarlonSamuels Got some extra cash i am going with the HD 7770 !!!!!!! Radeon HD 6850 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare Check this out !!!! HD7770 (128 bit) beats the HD6850 (256 bit) only in power consumption. But [...]
[...] or MSI 7770. Your expert advice on which to choose, topgear? Or should I make a new thread? Radeon HD 6850 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare Performance wise HD6850(256 bit) is always better than HD7770(128 bit), although HD7770 with its [...]
[...] More gpu insight >Saphire Radeon HD 6850 Radeon HD 7770 Radeon HD 6850 The differences between them $20 difference with the 6850 being better than the 7770. If you can spring for it, go for the [...]
[...] ummm 6850 is 256 bit memory interface while 7700 is 128 bit. there are some other mismatch too: Radeon HD 6850 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare technically 6850 has higher configuration and higher price tag. Reply With Quote [...]
[...] VGA..comunque ti assicuro che sia una 6850 che una 6870....gliele suonano di brutto ad una 7770... Radeon HD 6850 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare Radeon HD 6870 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare per [...]
0013 says:
0215asbd0dsa
frh

fhhfghg

Your email address will not be published.


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

WP-SpamFree by Pole Position Marketing