AMD Radeon R9 255 OEM vs ATI FireGL V7700

VS

AMD Radeon R9 255 OEM

ATI FireGL V7700

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 512MB VRAM FireGL V7700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Released 6 years and 1 months late

Boost Clock930MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (73.60GB/s vs 72.06GB/s)

192 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +91%

0.952 TFLOPS

FireGL V7700

0.497 TFLOPS

Radeon R9 255 OEM

VS

FireGL V7700

Graphics Card

Dec 2013

Release Date

Nov 2007

Volcanic Islands

Generation

FireGL

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

1126 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

128bit

Memory Bus

256bit

73.60GB/s

Bandwidth

72.06GB/s

Render Config

8

Compute Units

4

-

512

Shading Units

320

32

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

12.43 GPixel/s

29.76 GTexel/s

Texture Rate

12.43 GTexel/s

-

952.3 GFLOPS

FP32 (float)

497.3 GFLOPS

59.52 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

65W

TDP

Unknown

250 W

Suggested PSU

200 W

No outputs

Outputs

1x DVI 1x DisplayPort 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Cape Verde

GPU Name

RV670

Cape Verde PRX

GPU Variant

RV670 GL

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.5 billion

Transistors

0.666 billion

123 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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