Home GPU Comparison AMD Radeon HD 7970 GHz Edition vs ATI Radeon HD 3450 PCI

AMD Radeon HD 7970 GHz Edition vs ATI Radeon HD 3450 PCI

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 GHz Edition and 512MB VRAM Radeon HD 3450 PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 GHz Edition 's Advantages
Released 4 years and 5 months late
Boost Clock1050MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (288.0GB/s vs 6.400GB/s)
2008 additional rendering cores
ATI Radeon HD 3450 PCI 's Advantages
Lower TDP (25W vs 300W)

Score

Benchmark

FP32 (float)
Radeon HD 7970 GHz Edition +8860%
4.301 TFLOPS
Radeon HD 3450 PCI
0.048 TFLOPS
VS

Graphics Card

Jun 2012
Release Date
Jan 2008
Southern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCI

Clock Speeds

1000 MHz
Base Clock
-
1050 MHz
Boost Clock
-
1500 MHz
Memory Clock
400 MHz

Memory

3GB
Memory Size
512MB
GDDR5
Memory Type
DDR2
384bit
Memory Bus
64bit
288.0GB/s
Bandwidth
6.400GB/s

Render Config

32
Compute Units
2
-
-
-
2048
Shading Units
40
128
TMUs
4
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
64 KB
-
-
-

Theoretical Performance

33.60 GPixel/s
Pixel Rate
2.400 GPixel/s
134.4 GTexel/s
Texture Rate
2.400 GTexel/s
-
-
-
4.301 TFLOPS
FP32 (float)
48.00 GFLOPS
1075 GFLOPS
FP64 (double)
-

Board Design

300W
TDP
25W
700 W
Suggested PSU
200 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x S-Video
1x 6-pin + 1x 8-pin
Power Connectors
None

Graphics Processor

Tahiti
GPU Name
RV620
Tahiti XT2 (215-0821065)
GPU Variant
RV620 LE
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.181 billion
352 mm²
Die Size
67 mm²

Graphics Features

12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
4.1

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