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Meet The New Cards

ATI's Radeon X1950XTX: You Say You Want A RAM Revolution
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Radeon X1950 CrossFire Edition

There are many cards that are being announced today. The flagship Radeon X1950XT and the Radeon X1950 CrossFire Edition both have a core clock speed of 650 MHz. This is a change from previous CrossFire Edition card specifications as they would generally be slower than the flagship card. This is good as the cards no longer will need to clock to a comparable speed or in other words, the XTX version will no longer have to go slower anymore.

There are three other cards that ATI is announcing today as well: the Radeon X1900XT 256, the Radeon X1650 Pro and the X1300XT. The first card is the Radeon X1900XT 256, and it is equivalent in all regards to the previous flagship card Radeon X1900XTX except that it has 256 MB of GDDR3 memory instead of 512 MB. While there isn't a CrossFire-compatible card for the Radeon X1900XT 256, there is the strong possibility that it will later be able to double up in CrossFire mode via a software implementation.

The Radeon X1650 Pro is the identical card as the Radeon X1600XT, but with a new name and price. The same goes for the Radeon X1300XT, which formerly was the X1600 Pro. As with many new launches, the processors from previous generations find themselves on new boards with different names and credentials. In this case people are merely getting a price drop with a facelift.

We only received the Radeon X1950XTX, X1950 CrossFire Edition, and X1900XT 256 for testing. We are waiting on the Radeon X1650 Pro and X1300XT. The chart below shows the differences in the entire family. We will provide more coverage once we receive the additional cards.

ATI Radeon X1950, X1900, X1800, & X1600 Specifications
X1950XTX X1900XTX X1900XT X1900XT 256
Process Technology 90nm 90nm 90nm 90nm
Number of Transistors 384M 384M 384M 384M
Core Clocks (Vertex, Core) in MHz 650/650 650/650 625/625 625/625
Memory Clock (MHz / data rate) 1000/2000 775/1550 725/1450 725/1450
Vertex Shaders (#) 8 8 8 8
Pixel Shaders (#) 48 48 48 48
ROPs (#) 16 16 16 16
Texture units 16 16 16 16
Frame Buffer Size 512MB 512MB 512MB 256MB
Memory Bandwidth (GB/sec) 64 49.6 46.4 46.4
Vertices/Second (Millions) 1300 1300 1250 1250
Pixel Fill Rate (# ROPs x clk) in Billions/sec 10.4 10.4 7.2 7.2
Texture Fill Rate (# Texture units x clk) in Billions/sec 41.6 41.6 40 40
RAMDACs 400MHz 400MHz 400MHz 400MHz
Bus Technology PCI Express PCI Express PCI Express PCI Express
X1800XT X1800GTO X1600XT
Process Technology 90nm 90nm 90nm
Number of Transistors 321M 321M 157M
Core Clocks (Vertex, Core) in MHz 625/625 470/430 440/400
Memory Clock (MHz / data rate) 750/1500 500/1000 690/1380
Vertex Shaders (#) 8 8 8
Pixel Shaders (#) 16 12 12
ROPs (#) 16 16 16
Texture units 16 16 4
Frame Buffer Size 512MB 256MB 256MB
Memory Bandwidth (GB/sec) 48 32 44.16
Vertices/Second (Millions) 1300 940 880
Pixel Fill Rate (# ROPs x clk) in Billions/sec 8.8 6.88 6.4
Texture Fill Rate (# Texture units x clk) in Billions/sec 10 7.52 28.16
RAMDACs 400MHz 400MHz 400MHz
Bus Technology PCI Express PCI Express PCI Express
NVIDIA GeForce 7950, 7900, 7800, & 7600 Specifications
7950GX2 7900GTX 7900GT 7800GTX 512
Process Technology 90nm 90nm 90nm 110nm
Number of Transistors 556M 278M 278M 302M
Core Clocks (Vertex, Core) in MHz 500/500 700/650 470/450 550/550
Memory Clock (MHz / data rate) 600/1200 800/1600 660/1320 850/1700
Vertex Shaders (#) 16 8 8 8
Pixel Shaders (#) 48 24 24 24
ROPs (#) 32 16 16 16
Memory Interface 256-bit 256-bit 256-bit 256-bit
Frame Buffer Size 1 GB 512 MB 256 MB 512 MB
Memory Bandwidth (GB/sec) 76.8 51.2 42.2 54.4
Vertices/Second (Millions) 2000 1400 940 1100
Pixel Fill Rate (# ROPs x clk) in Billions/sec 16 10.4 7.2 8.8
Texture Fill Rate (# pixel pipes x clk) in Billions/sec 24 15.6 10.8 13.2
RAMDACs 400MHz 400MHz 400MHz 400MHz
Bus Technology PCI Express PCI Express PCI Express PCI Express
7800GTX 7800GT 7800GS AGP 7600GT
Process Technology 110nm 110nm 110nm 90nm
Number of Transistors 302M 302M 302M 178M
Core Clocks (Vertex, Core) in MHz 470/430 440/400 375/375 560/560
Memory Clock (MHz / data rate) 600/1200 500/1000 600/1200 700/1400
Vertex Shaders (#) 8 7 6 5
Pixel Shaders (#) 24 20 16 12
ROPs (#) 16 16 8 8
Memory Interface 256-bit 256-bit 256-bit 128-bit
Frame Buffer Size 256 MB 256 MB 256 MB 256 MB
Memory Bandwidth (GB/sec) 38.4 32 38.4 22.4
Vertices/Second (Millions) 940 770 562.5 700
Pixel Fill Rate (# ROPs x clk) in Billions/sec 6.88 6.4 3 4.48
Texture Fill Rate (# pixel pipes x clk) in Billions/sec 10.32 8 6 6.72
RAMDACs 400MHz 400MHz 400MHz 400MHz
Bus Technology PCI Express PCI Express AGP 8X PCI Express

While the technical launch is today, cards will not hit the shelves until September 14. Public relations manager Will Willis stated that "Card orders can be taken on September 23 but they won't ship until September 14." So if you want one you will have to wait but you can place your order today.

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