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GeForce 8400 GS 512MB vs Radeon HD 7750
Intro
The GeForce 8400 GS 512MB features core clock speeds of 650 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 RAM. It features 16 SPUs along with 8 Texture Address Units and 4 ROPs.Compare those specifications to the Radeon HD 7750, which comes with a clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 512 SPUs, 32 Texture Address Units, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce 8400 GS 512MB |
|
40 Watts |
| Radeon HD 7750 |
|
55 Watts |
|
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Memory Bandwidth
The Radeon HD 7750 should in theory perform a lot faster than the GeForce 8400 GS 512MB in general. (explain)
| Radeon HD 7750 |
|
72000 MB/sec |
| GeForce 8400 GS 512MB |
|
6400 MB/sec |
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Texel Rate
The Radeon HD 7750 should be quite a bit (more or less 392%) more effective at texture filtering than the GeForce 8400 GS 512MB. (explain)| Radeon HD 7750 |
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25600 Mtexels/sec |
| GeForce 8400 GS 512MB |
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5200 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 7750 is a better choice, and very much so. (explain)| Radeon HD 7750 |
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12800 Mpixels/sec |
| GeForce 8400 GS 512MB |
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2600 Mpixels/sec |
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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
GeForce 8400 GS 512MBAmazon.com
Check prices at:
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Radeon HD 7750Amazon.com
Check prices at:
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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
| Model | GeForce 8400 GS 512MB | Radeon HD 7750 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | June 2007 | February 2012 |
| Code Name | G86 | Cape Verde Pro |
| Memory | 512 MB | 1024 MB |
| Core Speed | 650 MHz | 800 MHz |
| Memory Speed | 800 MHz | 4500 MHz |
| Power (Max TDP) | 40 watts | 55 watts |
| Bandwidth | 6400 MB/sec | 72000 MB/sec |
| Texel Rate | 5200 Mtexels/sec | 25600 Mtexels/sec |
| Pixel Rate | 2600 Mpixels/sec | 12800 Mpixels/sec |
| Unified Shaders | 16 | 512 |
| Texture Mapping Units | 8 | 32 |
| Render Output Units | 4 | 16 |
| Bus Type | DDR2 | GDDR5 |
| Bus Width | 64-bit | 128-bit |
| Fab Process | 80 nm | 28 nm |
| Transistors | 210 million | 1500 million |
| Bus | PCIe x16, PCI | PCIe 3.0 x16 |
| DirectX Version | DirectX 10 | DirectX 11.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.2 |
Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.
GeForce 8400 GS 512MBAmazon.com
Check prices at:
|
Radeon HD 7750Amazon.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 “GeForce 8400 GS 512MB vs Radeon HD 7750”[...] to the below site, my current 8400GS consumes 40w while 7750 hd consumes 55w ie.15w more. GeForce 8400 GS 512MB vs Radeon HD 7750 – Performance Comparison Benchmarks @ Hardware Compare According to Thermaltake Power Supply Calculator, my current rig with 8400gs consumes 327w. While [...]
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