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Radeon HD 4750 vs Radeon HD 6570 (OEM) 2GB

Intro

The Radeon HD 4750 comes with core speeds of 730 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.

Compare those specifications to the Radeon HD 6570 (OEM) 2GB, which features GPU core speed of 650 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 480 Stream Processors, 24 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
Radeon HD 4750 75 Watts
Difference: 25 Watts (50%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6570 (OEM) 2GB should theoretically be much superior to the Radeon HD 4750 in general. (explain)

Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Radeon HD 4750 51200 MB/sec
Difference: 12800 (25%)

Texel Rate

The Radeon HD 4750 is quite a bit (about 50%) faster with regards to AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 4750 23360 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 7760 (50%)

Pixel Rate

The Radeon HD 4750 should be quite a bit (more or less 125%) faster with regards to FSAA than the Radeon HD 6570 (OEM) 2GB, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 4750 11680 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 6480 (125%)

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 4750

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 2GB

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.

Specifications

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Model Radeon HD 4750 Radeon HD 6570 (OEM) 2GB
Manufacturer AMD AMD
Year February 2011
Code Name RV740 Turks
Memory 512 MB 1024 MB
Core Speed 730 MHz 650 MHz
Memory Speed 3200 MHz 4000 MHz
Power (Max TDP) 75 watts 50 watts
Bandwidth 51200 MB/sec 64000 MB/sec
Texel Rate 23360 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 11680 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 640(128x5) 480
Texture Mapping Units 32 24
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 826 million 715 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4750

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 2GB

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.

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