GPU Comparison

A

AMD

RADEON

AMD Radeon HD 6850 X2

CORE STATE Barts

VRAM 2 GB

CLOCK SPEED —

TDP 254 W

BUS WIDTH 256 bit

ARCHITECTURE TeraScale 2

nm

PROCESS 40 nm

LAUNCH DATE 2011

VS

NVIDIA

GEFORCE

GeForce GTX 970

CORE STATE GM204

VRAM 4 GB

CLOCK SPEED 1178 MHz

TDP 148 W

BUS WIDTH 256 bit

ARCHITECTURE Maxwell 2.0

nm

PROCESS 28 nm

LAUNCH DATE 2014

PERFORMANCE BENCHMARKS

geekbench_opencl

3,977

28,528

3dmark_3dmark_steel_nomad_dx12

N/A

369

geekbench_metal

N/A

13,595

geekbench_vulkan

N/A

31,001

passmark_directx_10

N/A

46

passmark_directx_11

N/A

71

passmark_directx_12

N/A

41

passmark_directx_9

N/A

143

passmark_g2d

N/A

764

passmark_g3d

N/A

9,638

passmark_gpu_compute

N/A

4,073

DETAILED SPECIFICATIONS

SPECIFICATION

HD 6850 X2

GTX 970

Core Specs

Shading Units

960

1,664 +73.3%

Shaders

960

1,664 +73.3%

TMUs

48

104 +116.7%

ROPs

32

56 +75.0%

Compute Units

12

—

Clocks

Base Clock

—

1050 MHz

Boost Clock

—

1178 MHz

GPU Clock

800 MHz

—

Memory Clock

1050 MHz 4.2 Gbps effective

1753 MHz 7 Gbps effective

Memory

Memory Size

2 GB

4 GB

VRAM (MB)

2,048

4,096 +100.0%

Memory Type

GDDR5

GDDR5

Memory Bus

256 bit

256 bit

Bandwidth

134.4 GB/s

224.4 GB/s

Cache

L1 Cache

8 KB (per CU)

48 KB (per SMM)

L2 Cache

512 KB

2 MB

Performance

Pixel Rate

25.60 GPixel/s

65.97 GPixel/s

Texture Rate

38.40 GTexel/s

122.5 GTexel/s

FP32 (TFLOPS)

1.536 TFLOPS

3.920 TFLOPS

FP64 (TFLOPS)

—

122.5 GFLOPS (1:32)

Power

TDP

254 W

148 W

TDP (W)

254

148 -41.7%

Suggested PSU

600 W

300 W

Power Connectors

2x 8-pin

2x 6-pin

Architecture

Architecture

TeraScale 2

Maxwell 2.0

GPU Name

Barts

GM204

Generation

Northern Islands (HD 6800)

GeForce 900

Process Size

40 nm

28 nm

Transistors

1,700 million

5,200 million

Die Size

255 mm²

398 mm²

Foundry

TSMC

TSMC

Density

6.7M / mm²

13.1M / mm²

API Support

DirectX

11.2 (11_0)

12 (12_1)

OpenGL

4.4

4.6

Vulkan

—

1.4

OpenCL

1.2

3.0

CUDA

—

5.2

Shader Model

5.0

6.8

Physical

Slot Width

Dual-slot

Dual-slot

Length

—

267 mm 10.5 inches

Height

—

111 mm 4.4 inches

Outputs

2x DVI1x HDMI 1.3a1x DisplayPort 1.1

1x DVI1x HDMI 2.03x DisplayPort 1.2

Bus Interface

PCIe 2.0 x16

PCIe 3.0 x16

Other

Launch Price

—

329 USD

Production

End-of-life

End-of-life

Predecessor

Evergreen

GeForce 700

Successor

Southern Islands

GeForce 10

View Radeon HD 6850 X2 Details View GeForce GTX 970 Details