 |
 |
GeForce 840M vs GeForce 920M
Intro
The GeForce 840M makes use of a 28 nm design. nVidia has clocked the core frequency at 1029 MHz. The DDR3 RAM is set to run at a frequency of 1000 MHz on this particular card. It features 384 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.Compare all that to the GeForce 920M, which comes with GPU clock speed of 954 MHz, and 2048 MB of DDR3 memory set to run at 900 MHz through a 64-bit bus. It also is made up of 384 Stream Processors, 32 Texture Address Units, and 8 ROPs.
Benchmarks
These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.
3DMark Fire Strike Graphics Score
| GeForce 840M |
|
1600 points |
| GeForce 920M |
|
1180 points |
|
|
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Theoretically, the GeForce 840M should perform a little bit faster than the GeForce 920M in general. (explain)
| GeForce 840M |
|
16000 MB/sec |
| GeForce 920M |
|
14400 MB/sec |
|
|
Texel Rate
The GeForce 920M is quite a bit (approximately 24%) more effective at anisotropic filtering than the GeForce 840M. (explain)| GeForce 920M |
|
30528 Mtexels/sec |
| GeForce 840M |
|
24696 Mtexels/sec |
|
|
Pixel Rate
The GeForce 840M will be just a bit (about 8%) faster with regards to AA than the GeForce 920M, and will be able to handle higher screen resolutions more effectively. (explain)| GeForce 840M |
|
8232 Mpixels/sec |
| GeForce 920M |
|
7632 Mpixels/sec |
|
|
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 840MAmazon.com
Check prices at:
|
GeForce 920MAmazon.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
| Model | GeForce 840M | GeForce 920M |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | March 12 2014 | March 12 2015 |
| Code Name | GM108 | GK208 |
| Memory | 2048 MB | 2048 MB |
| Core Speed | 1029 MHz | 954 MHz |
| Memory Speed | 2000 MHz | 1800 MHz |
| Power (Max TDP) | 30 watts | (Unknown) watts |
| Bandwidth | 16000 MB/sec | 14400 MB/sec |
| Texel Rate | 24696 Mtexels/sec | 30528 Mtexels/sec |
| Pixel Rate | 8232 Mpixels/sec | 7632 Mpixels/sec |
| Unified Shaders | 384 | 384 |
| Texture Mapping Units | 24 | 32 |
| Render Output Units | 8 | 8 |
| Bus Type | DDR3 | DDR3 |
| Bus Width | 64-bit | 64-bit |
| Fab Process | 28 nm | 28 nm |
| Transistors | (Unknown) million | (Unknown) million |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 12 | DirectX 12 |
| OpenGL Version | OpenGL 4.5 | OpenGL 4.5 |
Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.
GeForce 840MAmazon.com
Check prices at:
|
GeForce 920MAmazon.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
Be the first to leave a comment!