NVIDIA GeForce 9800M GTS SLI vs NVIDIA GeForce 9800M GTX
NVIDIA GeForce 9800M GTS SLI► remove
The Nvidia GeForce 9800M GTS SLI consists out of two GeForce 9800M GTS in SLI mode. Each 9800M GTS is based on the G94 core with 64 shader processors. The chips are produced in 65nm (512 MB) and later in 55nm (1024 MB versions). Therefore, the boards power consumption stays the same (75 Watt) for both versions.
The SLI version of the 9800M GTS is about 0-40% faster than a single 9800M GTS (depending on the SLI support of the game and the driver version). In some games there may even be a slight decrease of performance. Furthermore, some games may suffer from micro stuttering in the range of 30 fps (because of the different frametimes). This means you may need more fps for a fluent gameplay experience. Still DirectX 10 games should run in medium to high detail settings and resolutions.
As all cards with DirectX 10 capabilities, the GeForce 9800M GTS renders the 3D images using "Unified Shaders". There don't exist any more dedicated pixel- and vertex shaders but 2x64 so called stream processors make the graphic work (which has been done by pixel and vertex shaders in former days). Furthermore, the shader units are higher clocked than the chip (1500 MHz).
An advantage of the GeForce 9000 series is the integrated PureVideo HD video processor. It is able to help with the decoding of H.264-, VC-1-, MPEG2- and WMV9 video material in HD quality and eases the CPU.
In conjunction with the Nvidia 9100M G integrated graphics, the 9800M GTS supports Hybrid-SLI (only HybridPower). HybridPower is a technique to choose between the integrated and dedicated graphics core, if performance or battery runtime is needed. This works only in Windows Vista. Up to now the user has to use a tool to switch between the GPUs. Later Nvidia wants to switch automatically in the drivers. GeForceBoost is not supported with this card, as there would be no performance gain to combine the integrated GPU with the 9800M GTS.
Compared to desktop graphics cards, the 9800M GTS SLI should be a bit slower than the GeForce 8800 GS in SLI mode(which has a higher memory clock rate).
NVIDIA GeForce 9800M GTX► remove
The Nvidia GeForce 9800M GTX is a graphics adapter for laptops based on the G92 core. In general, the GPU is similar to that of the 8800M GTX but with 112 unified shader cores instead of 96. The chip is manufactured in a 65nm process and because of the high shader count, the power consumption (75 Watt of the MXM board) can be quite high. As a result, the 9800M GTX is only found in larger laptops with relatively powerful cooling solutions.
The performance of the chip is noticeably better than both the 9800M GT and GTS because of the additional shader units (see benchmarks below). Therefore, DirectX 10 games of 2008 should all be playable in high details.
As with all cards with DirectX 10 capabilities, the GeForce 9800M GTX renders 3D images using "Unified Shaders". Dedicated pixel- and vertex shaders have been dropped in favor of stream processors, which have now taken up much of the rendering burden. Furthermore, the shader units are higher clocked than the core chip itself at 1250 MHz.
A feature found in the GeForce 9000 series is the integrated PureVideo HD video processor. The GPU is able to assist the CPU in the decoding of H.264-, VC-1-, MPEG2- and WMV9 video material.
In conjunction with the Nvidia 9100M G integrated graphics, the 9800M GTX supports Hybrid-SLI known as HybridPower. HybridPower is a technique available only in Windows Vista that allows users to choose between the integrated or dedicated graphics core for power-saving purposes. Eventually, graphics switching was seamlessly accomplished through drivers by Nvidia, a technology now known as Optimus. GeForceBoost is not supported with the 9800M GTX as there would be no performance gain when paired the integrated GPU.
Compared to desktop graphics cards, the 9800M GTX should be a bit slower than the GeForce 8800 GT, which has a higher memory clock rate.
The 9800M GTX was eventually succeeded by the GTX 260M. The latter is based off of the G92b core architecture and is produced in a 55nm fabrication process, leading to lower energy demands and heat dissipation.
|NVIDIA GeForce 9800M GTS SLI||NVIDIA GeForce 9800M GTX|
|GeForce 9800M Series|
|128 -||112 -|
|Core||600 MHz||500 MHz|
|Shader||1500 MHz||1250 MHz|
|Memory||800 MHz||800 MHz|
|Bus||256 Bit||256 Bit|
|Max. Memory||512 MB||1024 MB|
|DirectX||DirectX 10, 4.0||DirectX 10, 4.0|
|Transistors||1508 Million||754 Million|
|Technology||55/65 nm||65 nm|
|Features||PureVideo HD, CUDA, PhysX-ready, SLI||HybridPower, PureVideo HD, CUDA, PhysX ready|
|2xMXM 3||MXM 3|
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