Radeon X Series The ATi Radeon X Series is the latest offering from graphics card manufacturer ATi Technologies. Overview The X series were the latest line of ATi cards that was meant to counter rival NVIDIA's GeForce 6 Series. At first, ATi released the X800 series aimed at the enthusiast market, the three models in the X800 series are the X800 Pro, the X800 XT and the X800 XT Platnium Edition, which is just an overclocked X800 XT. All are available in both AGP and PCI-Express form, except for the X800 Pro, which is available in only AGP form. Later ATi released the X600 and the X300 which are all only avaliable in PCI Express form. Recently ATi also announced the X700 series, which should appear in stores shortly, it is also only available in PCI Express form. When ATi released specifications for their X series, many users were surprised at the fact ATi had decided not to include support for shader model 3.0, as Nvidia had in their lineup of cards. ATi instead decided to use shader model 2.0b. It is also likely ATi will never release a shader model 3.0 card, and will stick with 2.0b until the release of shader model 4.0, or perhaps whatever comes next, example: shader model 3.0a. Model performance Models, in order of performance, (from lowest to highest): Radeon X300SE Radeon X300 Radeon X600 Pro Radeon X600 XT Radeon X700 Radeon X700 Pro Radeon X700 XT Radeon X800 Pro Radeon X800 XT Radeon X800 XT Platinum Edition Model series and specifications Radeon X300 series The X300 series is the PCI-Express equivalent of the Radeon 9600, it is just based on new hardware. The X300SE series is a PCI-Express equivalent of the Radeon 9600SE, and also just based on new hardware. Each of the series has the same set of features as the Radeon X models. While the basic feature-set is identical to RV380, the RV370 core will be based on a 0.11 micrometre process. X300SE Core Clock: 325MHz Memory Clock: 400MHz Pixel Pipelines: 4 Vertex Processors: 2 Memory: 128MB/256MB GDDR1 memory on a 64-bit interface MSRP,(RRP): $79-$199 US depending on display/memory configurations X300 Core Clock: 325MHz Memory Clock: 400MHz Pixel Pipelines: 4 Vertex Processors: 4 Memory: 128MB/256MB GDDR1 memory on a 128-bit interface MSRP,(RRP): $79-$199 US depending on display/memory configurations Radeon X600 series The X600 Pro series is the PCI-Express equivalent of the Radeon 9600 Pro, but is based on new hardware. The X600XT is the PCI-Express equivalent of the Radeon 9600XT with higher core and memory clocks, the top-end card of the X600 series. X600 Pro Core Clock: 400MHz Memory Clock: 600MHz Pixel Pipelines: 4 Vertex Processors: 2 Memory: 128MB/256MB GDDR1 on a 128-bit interface MSRP,(RRP): $199-$299 US depending on display/memory configurations X600 XT Core Clock: 400MHz Memory Clock: 700MHz Pixel Pipelines: 4 Vertex Processors: 2 Memory: 128MB/256MB GDDR1 on a 128-bit interface MSRP,(RRP): $199-$299 US depending on display/memory configurations Radeon X700 series The X700 series replaced the X600 in September 2004. The X700 series has a similar core and memory setup to the Radeon 9500 Pro, only clocked much higher and produced on a 0.11 micrometre process. The X700XT is the fastest version of the X700 series and it performs comparably to the 9800XT. X700 Core Clock: 400MHz Memory Clock: 700MHz Pixel Pipelines: 8 Vertex Processors: 6 Memory: 128MB GDDR1 on a 128-bit interface MSRP,(RRP): $150 US X700 Pro Core Clock: 420MHz Memory Clock: 864MHz Pixel Pipelines: 8 Vertex Processors: 6 Memory: 256MB GDDR-3 on a 128-bit interface MSRP,(RRP): $199 US X700 XT Core Clock: 475MHz Memory Clock: 1050MHz Pixel Pipelines: 8 Vertex Processors: 6 Memory: 128MB/256MB GDDR-3 on a 128-bit interface MSRP,(RRP): $199-$299 US depending on display/memory configurations Radeon X800 series The X800 series was launched in May 2004, based on the R420 core. The X800 units are essentially quad-core RV360 chips, produced on a 0.13 micrometre process and using GDDR-3 memory. In terms of supported DirectX features, they are identical to the R3xx cores. The Radeon X800 series is currenty ATI's most powerful video card lineup and they compete with the Nvidia GeForce 6800 series. The X800 graphics processing units were among the first to use PCI-Express. These versions of the core use a slightly different version of the R420 core, designated the R423. The highest-end version is the X800XT Platinum Edition, which has a fully-enabled R420 core. The X800XT is a slightly lower-clocked version. The X800 Pro was the third released X800 card and it is similar to the X800XT, but with one fourth of the chip disabled. X800 Pro Core Clock: 475MHz Memory Clock: 900MHz Pixel pipelines: 12 Vertex Processors: 6 Memory: 256MB GDDR-3 on a 256-bit interface MSRP,(RRP): $399 US X800 XT Core Clock: 500MHz Memory Clock: 1000MHz Pixel pipelines: 16 Vertex Processors: 6 Memory: 256MB GDDR-3 on a 256-bit interface MSRP,(RRP): $450 US X800 XT Platinum Edition Core Clock: 520MHz Memory Clock: 1120MHz Pixel pipelines: 16 Vertex Processors: 6 Memory: 256MB GDDR-3 on a 256-bit interface MSRP,(RRP): $499 US The Radeon X800 XT Platinum Edition is in very limited availability so it typically sold for a higher price than the one quoted above. X800 SE As of 2004, a fourth version, the X800SE, is expected to be launched shortly, and will have half of the core disabled. X850 ATi has recently announced yet another card in the series, the X850. It has a little more performance than the X800 series and will be avaliable in 3 forms. These are the X850 Pro, the X850 XT, and the X850 XT Platnium Edition. Placement in market Radeon X300SE: Low performance and cheap, made for OEMs. Nvidia GeForce 6 series counterpart: GeForce 6200. Radeon X300: Low performance, also made for OEMs. Nvidia GeForce 6 series counterpart: GeForce 6200. Radeon X600 Pro: Low peformance for someone on a budget. Nvidia GeForce 6 series counterpart: None. Radeon X600 XT: Medium-low performance for cash strapped buyers. Nvidia GeForce 6 series counterpart: None. Radeon X700: Medium performance for someone on a budget. Nvidia GeForce 6 series counterpart: GeForce 6600. Radeon X700 XT: Medium-high performance. Nvidia GeForce 6 series counterpart: GeForce 6600 GT. Radeon X800 Pro: High performance for buyers and gamers with a high budget. Nvidia GeForce 6 series counterpart: GeForce 6800 GT. Radeon X800 XT: High performance for gamers with a larger budget. Nvidia GeForce 6 series counterpart: GeForce 6800 Ultra Radeon X800 XT Platinum Edition: Ultra-high performance for gamers with money to burn. Nvidia GeForce 6 series counterpart: GeForce 6800 Ultra Extreme Edition. 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