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Radeon HD 6770 1GB vs Radeon HD 7750

Intro

The Radeon HD 6770 1GB comes with core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs along with 40 Texture Address Units and 16 ROPs.

Compare all of that to the Radeon HD 7750, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory works at a frequency of 1125 MHz on this specific model. It features 512 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

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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

The Radeon HD 7750 should theoretically perform a bit faster 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 a lot (approximately 41%) better at anisotropic 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, though only just barely. (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

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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

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Model Radeon HD 6770 1GB Radeon HD 7750
Manufacturer AMD AMD
Year January 2011 February 2012
Code Name Juniper XT Cape Verde Pro
Memory 1024 MB 1024 MB
Core Speed 900 MHz 800 MHz
Memory Speed 4200 MHz 4500 MHz
Power (Max TDP) 108 watts 55 watts
Bandwidth 67200 MB/sec 72000 MB/sec
Texel Rate 36000 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 800 512
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1040 million 1500 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Comments

5 Responses to “Radeon HD 6770 1GB vs Radeon HD 7750”
Gamer PC für D3 für möglichst wenig Geld :) - Seite 4 - Diablo 3 Forum | inDiablo.de by ingame™ says:

[...] 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 [...]

Wird Diablo 3 auf meinem PC FLÜSSIG spielbar sein? - Seite 22 - Diablo 3 Forum | inDiablo.de by ingame™ says:

[...] 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 [...]

placa video - My Garage says:

[...] 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 - Digit Technology Discussion Forum says:

[...] 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 [...]

T. Video + Fuente para esta Config says:

[...] 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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