Palit GeForce GTX280 Review :: Palit GeForce GTX280 Features

07-26-2008 · Category: Hardware - Video Cards

By Doc Overclock
  • 1.4 Billion transistors
  • 240 SPs
  • DirectX 10.0
  • Board Specifications
  • Bus interface: PCI Express 2.0 Support
  • Two dual-link DVI outputs support two 2560x1600 resolution displays
  • Core Clock: 600 MHz
  • Memory: 1024MB
  • Memory Bus: 512 bit
  • Memory Clock: 2214MHz (1107x2)
  • RAMDACs: 400 MHz
  • Max Digital Resolution: 2560x1600
  • 3-way NVIDIA SLI® technology
  • HDMI function through DVI-HDMI dongle
  • GPU Specifications
  • 2nd generation NVIDIA® unified architecture
  • NVIDIA PureVideo™ HD technology
  • NVIDIA PhysX™-Ready
  • NVIDIA CUDA™ technology
  • Discrete, Programmable Video Processor
  • OpenGL® 2.1 support
  • Full Microsoft® DirectX® 10 Shader Model 4.0 support
  • Built for Microsoft® Windows Vista™

Palit’s card is based upon NVIDIA’s GTX280. The chip on the GTX280 is a 1.4 billion transistor monster, sized in the neighborhood of 576mm squared.  GT200, the chip series name has 240 Stream Processors, compared to the 128 found on the 9800GTX, the last chip that NVIDIA produced.  NVIDIA has stayed on the 65 nanometer process for their video card chips, while ATI has moved on to the 55 nanometer process starting with their HD3870. NVIDIA bought Ageia, the makers of the PPU (Physics Processing Unit) in April, a few short months ago. They are pushing the GTX280 and GTX260 cards as computing powerhouses. The GTX280 from Palit has a clock-speed of 600MHz, which means that the card has a texture fill rate of 48 billion textures a second. The GTX280 has the ability to do 933 GigaFLOPS of calculations in single precision mode and about 90 GigaFLOPS in Dual Precision mode.

Part of their initiative is the push to go beyond gaming. Video cards and CPUs are converging with their feature sets. As the video card gets more programmable, it can do many of the calculations and operations that a CPU can do and vice versa. Intel’s Larabee group is moving to using a multi-core chip that is using the CPU to do graphics in the near future.

CUDA is the NVIDIA initiative to do computing on the graphics processor instead of the CPU. The graphics card operates on thousands of threads at a time instead of the 32 that an Intel Core 2 CPU can operate on. The massively parallel nature of the graphics card means that even a mid-range card can have huge performance with calculations compared to the fastest Intel CPU in GPGPU or other applications. This could radically change the way our PC performs and offset many of the tasks being done by the CPU to the GPU.

The clock speeds on the Palit GTX280 are equivalent to the reference NVIDIA clocks: 600MHz for the core, 1107MHz for the memory and 1296MHz for the Shader clock.  The memory bandwidth on the card is 141.7GB/second due to the 512-bit memory bus.  The GeForce GTX280 has the most memory bandwidth of available single chip cards. For example the ATI Radeon HD4870 has a bandwidth of 115.2GB/second. NVIDIA introduced their SLI technology in 2004 with the launch of the 6800 Ultra video card, and the nForce 4 SLI motherboard chipset. At the time they did not have an Intel FSB license and were required to use AMD for their chipset choices. Today, NVIDIA allows users to have up to three video cards in SLI configuration. Three GTX260s in Tri-SLI should be an interesting combination of performance and power draw for those with the budget and monitor to support it.

 

 

G80 (GeForce 8800GTX)

G92 (GeForce 9800GTX)

G94 (GeForce 9600GT)

G92 (GeForce 9800GX2)

GTX260 (Reference)

GTX280 (XFX and Reference)

Process

90nm

65nm

65nm

65nm

65nm

65nm

Transistors

681 million

754 million

505 million

754 millionx2

1.4 billion

1.4 billion

Memory bus

384-bit

256-bit

256-bit

256-bitx2

448-bit

512-bit

ROPs

24

16

16

2x16

28

32

SPs

128

128

64

2x128

192

240

Memory

768MB

512MB

512MB

2x512MB

896MB

1024MB

Memory type

GDDR3

GDDR3

GDDR3

GDDR3

GDDR3

GDDR3

Memory bandwidth

85GB/ second

65GB/ second

58GB/ second

2x64GB/ second (128GB total)

112GB/ second

141GB/ second

Texture fillrate

37 Gigatexels/ second

43 Gigatexels/ second

21 Gigatexels/ second

38.4x2 Gigatexels/ second

40GTexels/ second

5Gigatexels/ second

FLOPS (MADD/MUL)

518GFLOPS

600GFLOPS

312GFLOPS

312GFLOPS

864GFLOPS

933GFLOPS

Reference clock speed

575MHz

675MHz

650MHz

600MHz

576MHz

602MHz

TDP

145W

156W

98W

197W

182W

236W


Palit GeForce GTX280 Review