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Radeon HD 4750 vs Radeon HD 6570 (OEM) 1GB

Intro

The Radeon HD 4750 makes use of a 40 nm design. AMD has clocked the core frequency at 730 MHz. The GDDR5 memory works at a speed of 800 MHz on this particular model. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 6570 (OEM) 1GB, which features a clock speed of 650 MHz and a GDDR3 memory speed of 900 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 480 SPUs, 24 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB 50 Watts
Radeon HD 4750 75 Watts
Difference: 25 Watts (50%)

Memory Bandwidth

Performance-wise, the Radeon HD 4750 should in theory be quite a bit better than the Radeon HD 6570 (OEM) 1GB in general. (explain)

Radeon HD 4750 51200 MB/sec
Radeon HD 6570 (OEM) 1GB 28800 MB/sec
Difference: 22400 (78%)

Texel Rate

The Radeon HD 4750 is a lot (about 50%) faster with regards to AF than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 4750 23360 Mtexels/sec
Radeon HD 6570 (OEM) 1GB 15600 Mtexels/sec
Difference: 7760 (50%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 4750 is superior to the Radeon HD 6570 (OEM) 1GB, and very much so. (explain)

Radeon HD 4750 11680 Mpixels/sec
Radeon HD 6570 (OEM) 1GB 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) 1GB

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) 1GB
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 1800 MHz
Power (Max TDP) 75 watts 50 watts
Bandwidth 51200 MB/sec 28800 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 GDDR3
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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate 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 filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4750

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 1GB

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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