Home GPU Comparison ATI Radeon HD 4770 vs AMD Radeon HD 6970

ATI Radeon HD 4770 vs AMD Radeon HD 6970

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 2GB VRAM Radeon HD 6970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages
Lower TDP (80W vs 250W)
AMD Radeon HD 6970 's Advantages
Released 1 years and 8 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (176.0GB/s vs 51.20GB/s)
896 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 4770
0.96 TFLOPS
Radeon HD 6970 +181%
2.703 TFLOPS
VS

Graphics Card

Apr 2009
Release Date
Dec 2010
Radeon R700
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
800 MHz
Memory Clock
1375 MHz

Memory

512MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
51.20GB/s
Bandwidth
176.0GB/s

Render Config

8
Compute Units
24
-
-
-
640
Shading Units
1536
32
TMUs
96
16
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
128 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

12.00 GPixel/s
Pixel Rate
28.16 GPixel/s
24.00 GTexel/s
Texture Rate
84.48 GTexel/s
-
-
-
960.0 GFLOPS
FP32 (float)
2.703 TFLOPS
192.0 GFLOPS
FP64 (double)
675.8 GFLOPS

Board Design

80W
TDP
250W
250 W
Suggested PSU
600 W
2x DVI 1x S-Video
Outputs
2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin

Graphics Processor

RV740
GPU Name
Cayman
RV740 XT (215-0727019)
GPU Variant
Cayman XT (215-0807007)
TeraScale
Architecture
TeraScale 3
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
0.826 billion
Transistors
2.64 billion
137 mm²
Die Size
389 mm²

Graphics Features

10.1 (10_1)
DirectX
11.2 (11_0)
3.3
OpenGL
4.4
1.1
OpenCL
1.2
N/A
Vulkan
N/A
-
-
-
4.1
Shader Model
5.0

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