NVidia today launched the entry level GeForce GT 730 graphics card. The card comes in three variants. The first uses DDR3 memory with a 128-bit interface. The second uses DDR3 memory with a 64-bit interface, and finally there is a GDDR5 version with a 64-bit interface. Most models will use a low profile design and a single slot active cooling system.
The 128-bit variant uses the GF108 GPU, last used on the GeForce GT 630 and GT 620. It is basically a rebranded GT 630, with the same clock speeds as a GT 620. It has 96 CUDA cores, clocked at 700 MHz, with 16 TMUs and 4 ROPs. This gives it a theoretical maximum throughput of 11.2 gigatexels/s and 2.8 gigapixels/s, as well as a potential compute power of 268.8 GFLOPS. It also has 1024 MB DDR3 memory, with an effective clock speed of 1.8 GHz on a 128-bit interface, and a bandwidth of 28.8 GB/s.
The second variant is based on the GK208 GPU, and has 384 CUDA cores. It also has 16 texture units and 8 raster operators. The core is clocked at 902 MHz, making it the same as a GT 630 version 2. Even the 2048 MB DDR3 memory hasn't changed from the previous generation, with a 64-bit bus and 1.8 GHz effective clock speed. Thus, it is just a rebranded GT 630 with no attempt at any improvements in the hardware. It offers throughputs of 14.43 gigatexels/s and 7.22 gigapixels/s, and a compute performance of 692.7 GFLOPS. It also has a bandwidth of 14.4 GB/s.
The final variant differs from the previous version only in its memory. It has 1024 MB GDDR5 memory, on a 128-bit interface and clocked at an effective 5.0 GHz, giving it a bandwidth of 40 GB/s. The other specs remain identical to the GK208 DDR3 variant, making this overall the more powerful of the three cards.
All the cards are identical in all other specs. They all support the DirectX 12.0 API (feature level 11_0), as well as OpenGL 4.4. They are all PCI-E 2.0 compatible, and each of them supports CUDA instructions, although the NVidia website does not yet say which version their recent low end cards support. Standard features such as PhysX, Adaptive VSync, 3D Vision and FXAA Anti Aliasing are all included.
The GT 730 series can power 3 monitors, via a Dual-Link DVI-D output, an HDMI and a VGA. The maximum DVI resolution is 2560 x 1600. HDMI can display up to 4096 x 2160 @ 24 Hz or 3840 x 2160 @ 30 Hz. The reference design cards are 2.713 (69 mm) inches high and 5.70 inches (145 mm) long. The GK107/DDR3 model has TDP of 49 Watts and a maximum operating temp of 98 C. The GK208/DDR3 model reduces the TDP to 23 Watts, and the GDDR5 models have a TDP of 38 Watts.
According to videocardz.com, cards should cost less than $89. A range of cards from various AIB manufacturers are available now at most large retailers.