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Radeon HD 7770 vs Radeon R7 260X

Intro

The Radeon HD 7770 comes with core speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R7 260X, which has a clock frequency of 1100 MHz and a GDDR5 memory frequency of 1625 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It features 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R7 260X 4381 points
Radeon HD 7770 3180 points
Difference: 1201 (38%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770 80 Watts
Radeon R7 260X 115 Watts
Difference: 35 Watts (44%)

Memory Bandwidth

As far as performance goes, the Radeon R7 260X should in theory be quite a bit better than the Radeon HD 7770 in general. (explain)

Radeon R7 260X 104000 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 32000 (44%)

Texel Rate

The Radeon R7 260X is quite a bit (approximately 54%) faster with regards to AF than the Radeon HD 7770. (explain)

Radeon R7 260X 61600 Mtexels/sec
Radeon HD 7770 40000 Mtexels/sec
Difference: 21600 (54%)

Pixel Rate

The Radeon R7 260X will be a small bit (approximately 10%) more effective at AA than the Radeon HD 7770, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R7 260X 17600 Mpixels/sec
Radeon HD 7770 16000 Mpixels/sec
Difference: 1600 (10%)

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 7770

Amazon.com

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Radeon R7 260X

Amazon.com

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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 7770 Radeon R7 260X
Manufacturer AMD AMD
Year February 2012 October 2013
Code Name Cape Verde XT Bonaire XTX
Memory 1024 MB 2048 MB
Core Speed 1000 MHz 1100 MHz
Memory Speed 4500 MHz 6500 MHz
Power (Max TDP) 80 watts 115 watts
Bandwidth 72000 MB/sec 104000 MB/sec
Texel Rate 40000 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 640 896
Texture Mapping Units 40 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1500 million 2080 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 11.2
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 7770

Amazon.com

Check prices at:

Radeon R7 260X

Amazon.com

Check prices at:

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.

Comments

2 Responses to “Radeon HD 7770 vs Radeon R7 260X”
robert says:

Radeon R7 260X 1gb
Radeon HD 7770 2gb

🙂

Dek says:

^So.....................?

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