NVIDIA GeForce 830M
The NVIDIA GeForce 830M is a (lower) mid-range, DirectX 11-compatible graphics card for laptops unveiled in March 2014. It is one of the first cards based on Nvidia's new Maxwell architecture (GM108 chip), but is still manufactured in 28 nm. The 830M offers 256 shader units (not yet confirmed) clocked at 1029 MHz (+ Boost) as well as 2 GB of DDR3 memory (64 bit, 2000 MHz effective).
Architecture
Compared to Kepler, Maxwell has been optimized in several details to increase power efficiency. Smaller Streaming Multiprocessors (SMM) with only 128 ALUs (Kepler: 192) and an optimized scheduler should lead to better utilization of the shaders. Nvidia promises that a Maxwell SMM with 128 ALUs can offer 90 percent of the performance of a Kepler SMX with 192 ALUs. The 830M may feature a partially deactivated GM108 with just 2 out of 3 SMMs (256 shader cores, 16 TMUs, 8 ROPs, 64-bit interface).
Another optimization is the massively enlarged L2 cache. The larger size can process some of the memory traffic to allow for a relatively narrow memory interface without significantly reducing performance.
Similar to GM107, the GM108 supports DirectX 11.2.
Performance
According to Nvidia, the GeForce 830M is about 25 percent faster than the old GT 730M. Practically, the advantage is a bit smaller and the performance similiar to the old GeForce GT 740M. Many games of 2013/2014 will run fluently in WXGA resolution (1366 x 768) and medium detail settings. However, very demanding games such as Crysis 3 or Battlefield 4 will require even lower resolutions and/or details.
Features
GM108 integrates the sixth generation of the PureVideo HD video engine (VP6), offering a better decoding performance for H.264 and MPEG-2 videos. Of course, VP6 supports all features of previous generations (4K support, PIP, video encoding via NVENC API). Unfortunately, HDMI 2.0 is still not supported.
Power Consumption
The power consumption of the GeForce 830M should be about 25 Watts or less. Therefore, the 830M is best suited for laptops 13 inches in size or larger. The 800M series also supports Optimus to automatically switch between an integrated graphics card and the Nvidia GPU.
| Manufacturer | NVIDIA | |||||||||||||||
| GeForce 800M Series |
| |||||||||||||||
| Codename | N15? | |||||||||||||||
| Architecture | Maxwell | |||||||||||||||
| Pipelines | 256 - unified | |||||||||||||||
| Core Speed * | 1029 - 1150 (Boost) MHz | |||||||||||||||
| Memory Speed * | 1800 MHz | |||||||||||||||
| Memory Bus Width | 64 Bit | |||||||||||||||
| Memory Type | DDR3 | |||||||||||||||
| Max. Amount of Memory | 2048 MB | |||||||||||||||
| Shared Memory | no | |||||||||||||||
| DirectX | DirectX 11, Shader 5.0 | |||||||||||||||
| technology | 28 nm | |||||||||||||||
| Features | GPU Boost 2.0, Optimus, PhysX, CUDA, GeForce Experience | |||||||||||||||
| Date of Announcement | 12.03.2014 |
Benchmarks
1 benchmarks and specifications
1 benchmarks and specifications
- Range of benchmark values for this graphics card
