AMD Radeon HD 7950 vs ATI Radeon HD 3450 X2
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 and 512MB VRAM Radeon HD 3450 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7950 's Advantages
Released 4 years and 1 months late
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (240.0GB/s vs 8.000GB/s)
1752 additional rendering cores
ATI Radeon HD 3450 X2 's Advantages
Lower TDP (50W vs 200W)
Score
Benchmark
FP32 (float)
Radeon HD 7950
+5872%
2.867 TFLOPS
Radeon HD 3450 X2
0.048 TFLOPS
Graphics Card
Jan 2012
Release Date
Dec 2007
Southern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
500 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
DDR2
384bit
Memory Bus
64bit
240.0GB/s
Bandwidth
8.000GB/s
Render Config
28
Compute Units
2
-
-
-
1792
Shading Units
40
112
TMUs
4
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
64 KB
-
-
-
Theoretical Performance
25.60 GPixel/s
Pixel Rate
2.400 GPixel/s
89.60 GTexel/s
Texture Rate
2.400 GTexel/s
-
-
-
2.867 TFLOPS
FP32 (float)
48.00 GFLOPS
716.8 GFLOPS
FP64 (double)
-
Board Design
200W
TDP
50W
550 W
Suggested PSU
250 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
2x DMS-59
2x 6-pin
Power Connectors
None
Graphics Processor
Tahiti
GPU Name
RV620
Tahiti PRO
(215-0821056)
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
