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Radeon HD 7750 vs Radeon R7 250

Intro

The Radeon HD 7750 makes use of a 28 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory works at a frequency of 1125 MHz on this particular model. It features 512 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Compare that to the Radeon R7 250, which features a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1150 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon R7 250 65 Watts
Difference: 10 Watts (18%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 250 should be a little bit faster than the Radeon HD 7750 in general. (explain)

Radeon R7 250 73600 MB/sec
Radeon HD 7750 72000 MB/sec
Difference: 1600 (2%)

Texel Rate

The Radeon HD 7750 should be a small bit (approximately 7%) faster with regards to texture filtering than the Radeon R7 250. (explain)

Radeon HD 7750 25600 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 1600 (7%)

Pixel Rate

The Radeon HD 7750 should be quite a bit (approximately 60%) more effective at AA than the Radeon R7 250, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 7750 12800 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 4800 (60%)

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 7750

Amazon.com

Radeon R7 250

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 7750 Radeon R7 250
Manufacturer AMD AMD
Year February 2012 October 2013
Code Name Cape Verde Pro Oland XT
Memory 1024 MB 1024 MB
Core Speed 800 MHz 1000 MHz
Memory Speed 4500 MHz 4600 MHz
Power (Max TDP) 55 watts 65 watts
Bandwidth 72000 MB/sec 73600 MB/sec
Texel Rate 25600 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 512 384
Texture Mapping Units 32 24
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1500 million 1040 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 maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could 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 card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on 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 memory bandwidth is, the lower the potential to get to the max fill rate.

Comments

3 Responses to “Radeon HD 7750 vs Radeon R7 250”
G Hanson says:

R7 250 sucks. 7750 wins.....

harry says:

hd 7750 is best gpu in under 10 k

and its really souport dx 11.1

and gives u ultimate 30-45 fps on all letest games with on screen 3d view and

all of us vicely know
amd gameing view is much better than nvidia

Tom says:

R7 250 used to play dx12 games. And better bandwidth. Easily Play next gem games in medium settings. I think R7 250 is a step ahead for the future vision.

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