HD 2600 & GeForce 8600: No Mid-Range?

HD 2600 & GeForce 8600: No Mid-Range?

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System Hardware
Processor Intel Core 2 Extreme X6800 Conroe2.93 GHz1,066 MHz FSB32kB+32kB L14 MB L2
Platform Nvidia Platform :XFX MB-N680-ISH9, LGA 775NVIDIA nForce 680i SLIATI Platform :Intel D975XBX, LGA 775Intel 975X Express Chipset
RAM Corsair CM2X1024-9136C5D2x 1024 MB DDR2 (CL5-5-5-15)
Hard Drive Western Digital Raptor, WD1500ADFD150 GB, 10,000 rpm, 16 MB cache, SATA150
Networking nForce4 Gigabit Ethernet (Nvidia), Intel 82573E/82573L Gigabit Ethernet Controller (Intel)
Graphics Cards
AMD / ATI Based Cards ATI Radeon X1950XTX 512 MB GDDR4 - Reference650 MHz Core1,000 MHz Memory (2.00 GHz DDR)Sapphire Radeon X1950 Pro Ultimate 256 MB GDDR3580 MHz Core800 MHz Memory (1.60 GHz DDR)
Nvidia Based Cards Foxconn GeForce 8800 GTS 320 MB GDDR3 ONOC575 MHz Core1.20 GHz - 96 Streaming Processors900 MHz Memory (1.80 GHz DDR)EVGA GeForce 8600 GTS SC 256 MB GDDR3675 MHz Core1.45 GHz - 32 Streaming Processors1,000 MHz Memory (2.00 GHz DDR)Sparkle GeForce 8600 GT 256 MB GDDR3540 MHz Core1.19 GHz - 32 Streaming Processors700 MHz Memory (1.40 GHz DDR)Nvidia GeForce 7900 GTX 512 MB GDDR3 - Reference650 MHz Core800 MHz Memory (1.60 GHz DDR)
Power Supply TopPower Powertrain 900W
CPU Cooler Zalman CNPS9700 LED
System Software & Drivers
OS Microsoft Windows XP Professional 5.10.2600, Service Pack 2
DirectX Version DirectX 9.0c
Graphics Driver(s) ATI - Catalyst 7.7 (WHQL)NVIDIA - Forceware 158.22 (Not WHQL)