ATI Radeon HD 3450 PCI vs AMD Radeon HD 6990
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3450 PCI and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 3450 PCI 's Advantages
Lower TDP (25W vs 375W)
AMD Radeon HD 6990 's Advantages
Released 3 years and 2 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 6.400GB/s)
1496 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 3450 PCI
0.048 TFLOPS
Radeon HD 6990
+5212%
2.55 TFLOPS
Graphics Card
Jan 2008
Release Date
Mar 2011
Radeon R600
Generation
Northern Islands
Desktop
Type
Desktop
PCI
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
400 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
2GB
DDR2
Memory Type
GDDR5
64bit
Memory Bus
256bit
6.400GB/s
Bandwidth
160.0GB/s
Render Config
2
Compute Units
24
-
-
-
40
Shading Units
1536
4
TMUs
96
4
ROPs
32
-
-
-
-
-
-
-
L1 Cache
8 KB (per CU)
64 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
2.400 GPixel/s
Pixel Rate
26.56 GPixel/s
2.400 GTexel/s
Texture Rate
79.68 GTexel/s
-
-
-
48.00 GFLOPS
FP32 (float)
2.550 TFLOPS
-
FP64 (double)
637.4 GFLOPS
Board Design
25W
TDP
375W
200 W
Suggested PSU
750 W
1x DVI
1x S-Video
Outputs
1x DVI
4x mini-DisplayPort 1.2
None
Power Connectors
2x 8-pin
Graphics Processor
RV620
GPU Name
Antilles
RV620 LE
GPU Variant
Antilles XT
(215-0807027)
TeraScale
Architecture
TeraScale 3
TSMC
Foundry
TSMC
55 nm
Process Size
40 nm
0.181 billion
Transistors
2.64 billion
67 mm²
Die Size
389 mm²
Graphics Features
10.1 (10_1)
DirectX
11.2 (11_0)
3.3
OpenGL
4.4
N/A
OpenCL
1.2
N/A
Vulkan
N/A
-
-
-
4.1
Shader Model
5.0
