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ATI Radeon HD 5950

ATI Radeon HD 5950 Image ATI Hemlock Image

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The Radeon HD 5950 is a graphics card by ATI, launched in January 1970. Built on the 40 nm process, and based on the Hemlock graphics processor, in its Hemlock PRO variant, the card supports DirectX 11.0. The Hemlock graphics processor is a large chip with a die area of 334 mm² and 2,154 million transistors. Unlike the fully unlocked Radeon HD 5970, which uses the same GPU but has all 1600 shaders enabled, ATI has disabled some shading units on the Radeon HD 5950 to reach the product's target shader count. Radeon HD 5950 combines two graphics processors to increase performance. It features 1440 shading units, 72 texture mapping units and 32 ROPs per GPU. ATI has placed 2,048 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 1,024 MB). The GPU is operating at a frequency of 725 MHz, memory is running at 1000 MHz.
We recommend the ATI Radeon HD 5950 for gaming with highest details at resolutions up to, and including, 2560x1440.
Being a dual-slot card, its power draw is rated at 302 W maximum. Display outputs include: 2x DVI, 1x HDMI, 1x DisplayPort. Radeon HD 5950 is connected to the rest of the system using a PCIe 2.0 x16 interface. The card measures 279 mm in length, and features a dual-slot cooling solution.

Graphics Processor

GPU Name: Hemlock
GPU Variant: Hemlock PRO
Process Size: 40 nm
Transistors: 2,154 million
Die Size: 334 mm²

Graphics Card

Released: Unreleased
Production Status: Unreleased
Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 725 MHz
Memory Clock: 1000 MHz
4000 MHz effective

Memory

Memory Size: 1024 MB x2
Memory Type: GDDR5
Memory Bus: 256 bit x2
Bandwidth: 128 GB/s x2

Render Config

Shading Units: 1440 x2
TMUs: 72 x2
ROPs: 32 x2
Compute Units: 18 x2
Pixel Rate: 23.2 GPixel/s x2
Texture Rate: 52.2 GTexel/s x2
Floating-point performance: 2,088 GFLOPS x2

Board Design

Slot Width: Dual-slot
Length: 11 inches
279 mm
TDP: 302 W
Outputs: 2x DVI
1x HDMI
1x DisplayPort

Graphics Features

DirectX: 11.0
OpenGL: 4.3
OpenCL: 1.2
Shader Model: 5.0

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Card Notes

Reference Design to ATi Radeon HD5850 X2

dubbed HD 5950

Never Released Test Prototype