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GPU Comparison
AMD Radeon HD 7720 OEM vs ATI Radeon HD 3870 AGP
AMD Radeon HD 7720 OEM vs ATI Radeon HD 3870 AGP
VS
AMD Radeon HD 7720 OEM
ATI Radeon HD 3870 AGP
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7720 OEM and 512MB VRAM Radeon HD 3870 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7720 OEM 's Advantages
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (134.4GB/s vs 72.06GB/s)
480 additional rendering cores
ATI Radeon HD 3870 AGP 's Advantages
Lower TDP (106W vs 150W)
Score
Benchmark
FP32 (float)
Radeon HD 7720 OEM
+170%
1.344 TFLOPS
Radeon HD 3870 AGP
0.497 TFLOPS
Radeon HD 7720 OEM
VS
Radeon HD 3870 AGP
Graphics Card
Mar 2013
Release Date
Unknown
Southern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
AGP 8x
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
1126 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR4
256bit
Memory Bus
256bit
134.4GB/s
Bandwidth
72.06GB/s
Render Config
-
SM Count
-
10
Compute Units
4
800
Shading Units
320
40
TMUs
16
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
256 KB
Theoretical Performance
26.88 GPixel/s
Pixel Rate
12.43 GPixel/s
33.60 GTexel/s
Texture Rate
12.43 GTexel/s
-
FP16 (half)
-
1344 GFLOPS
FP32 (float)
497.3 GFLOPS
-
FP64 (double)
99.46 GFLOPS
Graphics Processor
Barts
GPU Name
RV670
Barts LE (215-0798002)
GPU Variant
RV670 XT (215-0708005)
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
1.7 billion
Transistors
0.666 billion
255 mm²
Die Size
192 mm²
Board Design
150W
TDP
106W
450 W
Suggested PSU
300 W
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
Outputs
2x DVI 1x S-Video
-
Power Connectors
1x 8-pin
Graphics Features
11.2 (11_0)
DirectX
10.1 (10_1)
4.4
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
N/A
Vulkan
N/A
-
CUDA
-
5.0
Shader Model
4.1
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