AMD Radeon HD 7990 vs ATI Radeon HD 2600 XT

VS

AMD Radeon HD 7990 ATI Radeon HD 2600 XT

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 256MB VRAM ATI Radeon HD 2600 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 5 years and 10 months late

Boost Clock1000MHz

Larger VRAM bandwidth (288.0GB/s vs 22.40GB/s)

1928 additional rendering cores

ATI Radeon HD 2600 XT 's Advantages

Lower TDP (45W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +2033%

4.096 TFLOPS

ATI Radeon HD 2600 XT

0.192 TFLOPS

Radeon HD 7990

VS

ATI Radeon HD 2600 XT

Graphics Card

Apr 2013

Release Date

Jun 2007

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

700 MHz

Memory

3GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

22.40GB/s

Render Config

-

SM Count

-

32

Compute Units

3

2048

Shading Units

120

128

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

64 KB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

3.200 GPixel/s

128.0 GTexel/s

Texture Rate

6.400 GTexel/s

-

FP16 (half)

-

4.096 TFLOPS

FP32 (float)

192.0 GFLOPS

1024 GFLOPS

FP64 (double)

-

Graphics Processor

Malta

GPU Name

RV630

Malta XT (215-0849026)

GPU Variant

-

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

4.313 billion

Transistors

0.39 billion

365 mm²

Die Size

153 mm²

Board Design

375W

TDP

45W

750 W

Suggested PSU

200 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

4.0

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