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Radeon HD 6770 1GB vs Radeon HD 7750

Intro

The Radeon HD 6770 1GB features a GPU core speed of 900 MHz, and the 1024 MB of GDDR5 memory is set to run at 1050 MHz through a 128-bit bus. It also is comprised of 800 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon HD 7750, which has GPU core speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also features 512 SPUs, 32 TAUs, and 16 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon HD 6770 1GB 108 Watts
Difference: 53 Watts (96%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7750 should theoretically be a small bit better than the Radeon HD 6770 1GB overall. (explain)

Radeon HD 7750 72000 MB/sec
Radeon HD 6770 1GB 67200 MB/sec
Difference: 4800 (7%)

Texel Rate

The Radeon HD 6770 1GB will be quite a bit (about 41%) more effective at texture filtering than the Radeon HD 7750. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 10400 (41%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6770 1GB is superior to the Radeon HD 7750, not by a very large margin though. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
Radeon HD 7750 12800 Mpixels/sec
Difference: 1600 (13%)

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 6770 1GB

Amazon.com

Radeon HD 7750

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 6770 1GB Radeon HD 7750
Manufacturer AMD AMD
Year January 2011 February 2012
Code Name Juniper XT Cape Verde Pro
Fab Process 40 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 1024 MB 1024 MB
Core Speed 900 MHz 800 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1050 MHz (4200 MHz effective) 1125 MHz (4500 MHz effective)
Unified Shaders 800 512
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2
Power (Max TDP) 108 watts 55 watts
Shader Model 5.0 5.0
Bandwidth 67200 MB/sec 72000 MB/sec
Texel Rate 36000 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 12800 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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

Comments

5 Responses to “Radeon HD 6770 1GB vs Radeon HD 7750”
[...] deutlich sparsamer. Man schaue sich mal die MAX TDP an (wobei die ja eh schon nie erreicht wird): Radeon HD 6770 1GB vs Radeon HD 7750 – Performance Comparison Benchmarks @ Hardware Compare Es geht hier darum, genau auf die Bedürfnisse einen PC zuzu schneiden. Größere Grafikkarten [...]
[...] von LongM Sicher dass die 265watt reichen? Für die graka? Radeon HD 6770 1GB vs Radeon HD 7750 – Performance Comparison Benchmarks @ Hardware Compare 55W max TDP, kein extra Stromanschluss am Netzteil... Was fürn i5 hast du und was für restliche [...]
[...] este ca 7750 consuma mai putin si este mai rece,ca si performanta este putin mai buna 6770. Uite aici o comparatie. __________________ Conserva mea cu jucării YouTube Battlefield 3 Fragmovie [...]
[...] Need help in choosing a graphics card 6770 vs 7750 a basic info.. Benchmarks just browse through all benchmarks.. with the fact in mind that 6770 is [...]
[...] lei en este "review" consume menos que una equivalente en precio como la 6770. Fuente: Radeon HD 6770 1GB vs Radeon HD 7750 – Performance Comparison Benchmarks @ Hardware Compare Ahora, no se si tendre algun problema meterle una Nvidia si tengo proce amd, es una ignoracia de [...]

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