GeForce 9800 Series

The GeForce 9800 series contains the GX2 (dual GPU), GTX and GT variants.^[15]

GeForce 9800 GX2

On March 18, 2008 the GeForce 9800 GX2 was officially launched.

The GeForce 9800 GX2 has the following specifications: ^[16][17].

• Dual PCBs, dual GPU design
• 197 W power consumption ^[18].
• Two 65nm process GPUs, with 256 total Stream Processors (128 per PCB)^[19].
• Supports Quad SLI.
• Power of Two underclocked Geforce 8800 GTS 512(G92) video cards in SLI Mode
• 1 GiB (512 MB per PCB) memory framebuffer.
• Supports DirectX 10, Shader Model 4, OpenGL 2.1, and PCI-Express 2.0.
• Outputs include two DVI ports, an HDMI output, and S/PDIF in connector on-board for routing audio through the HDMI cable ^[20].
• An 8-pin and a 6-pin power connector.
• Clocks (Core/Shader/Memory): 600 MHz/1500 MHz/2000 MHz ^[21]
• 256-bit memory interface^[21]
• 128 GB/s memory bandwidth^[21]
• Release date: March 18, 2008
• Launch price of $599 ^[22].

  GeForce 9800 GTX

  On April 1, 2008 the GeForce 9800 GTX was officially launched. It was basically an 8800 GTS 512MB with two SLI connectors, higher clock speeds, and support for Nvidia Hybrid Power, a technology that allows the discrete GPU to shut off during non resource intensive applications, and instead use the integrated GPU. With these extra features though, a high price came too.

  Taken from an eVGA specification sheet:^[23]

• 128 Stream Processors.
• Clocks (Core/Shader/Memory): 675 MHz/1688 MHz/2200 MHz
• 256-bit memory interface.
• 512 MB of GDDR3 memory.
• 70.4 GB/s memory bandwidth
• Texture Fill Rate of 43.2 (billion/s).
• DirectX 10, Shader Model 4.0, OpenGL 2.1, and PCI-Express 2.0.
• Outputs include two DVI ports, an HDMI output(Using nVidia DVI to HDMI adapter(included)), and S/PDIF in connector on-board for routing audio through the HDMI cable.
• Release date was 2008-04-01. ^[24]
• Launch Price of $349. ^[25]

In July 2008 nVidia released the 55 nm refresh of the 9800 GTX: the 9800 GTX+. It has faster core (738 MHz) and shader (1836 MHz) clocks.

GeForce 9800 GT

The 9800GT is effectively a rebranded 8800GT, although some are being manufactured using a newer 55 nm technology instead of the older 65 nm first debuted on the 8800GT^[26]

ASUSTeK have released a 9800GT with Tri-SLI support.^[27]

Taken from the nVidia product detail page.^[28]

• 112 Stream Processors
• 512-1024MB Standard Memory
• 256-bit Memory Interface Width
• 600 MHz Graphics Clock (MHz)
• 1500 MHz Processor Clock (MHz)
• 900 MHz Memory Clock
• Texture Fill Rate (billion/s) 33.6
• Memory Bandwidth (GB/s) 57.6
• DirectX 10, Shader Model 4.0, OpenGL 2.1, and PCI-Express 2.0.