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Radeon HD 6570 (OEM) 2GB vs Radeon HD 7750

Intro

The Radeon HD 6570 (OEM) 2GB features core speeds of 650 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 480 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 7750, which makes use of a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM runs at a frequency of 1125 MHz on this particular model. It features 512 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
Radeon HD 7750 55 Watts
Difference: 5 Watts (10%)

Memory Bandwidth

In theory, the Radeon HD 7750 will be 13% faster than the Radeon HD 6570 (OEM) 2GB in general, because of its higher bandwidth. (explain)

Radeon HD 7750 72000 MB/sec
Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon HD 7750 is a lot (approximately 64%) better at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 7750 25600 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 10000 (64%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7750 is the winner, and very much so. (explain)

Radeon HD 7750 12800 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 7600 (146%)

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 6570 (OEM) 2GB

Radeon HD 7750

Specifications

Display Specifications

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Model Radeon HD 6570 (OEM) 2GB Radeon HD 7750
Manufacturer AMD AMD
Year February 2011 February 2012
Code Name Turks Cape Verde Pro
Memory 1024 MB 1024 MB
Core Speed 650 MHz 800 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 50 watts 55 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 15600 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 480 512
Texture Mapping Units 24 32
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 715 million 1500 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Radeon HD 6570 (OEM) 2GB

Radeon HD 7750

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