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GPU Comparison
ATI Radeon HD 4650 vs ATI Radeon HD 4870
ATI Radeon HD 4650 vs ATI Radeon HD 4870
VS
ATI Radeon HD 4650
ATI Radeon HD 4870
We compared two Desktop platform GPUs: 256MB VRAM Radeon HD 4650 and 512MB VRAM Radeon HD 4870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4650 's Advantages
Lower TDP (48W vs 150W)
ATI Radeon HD 4870 's Advantages
More VRAM (512GB vs 256GB)
Larger VRAM bandwidth (115.2GB/s vs 22.40GB/s)
480 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 4650
0.384 TFLOPS
Radeon HD 4870
+212%
1.2 TFLOPS
Radeon HD 4650
VS
Radeon HD 4870
Graphics Card
Sep 2008
Release Date
Jun 2008
Radeon R700
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
700 MHz
Memory Clock
900 MHz
Memory
256MB
Memory Size
512MB
GDDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
22.40GB/s
Bandwidth
115.2GB/s
Render Config
-
SM Count
-
4
Compute Units
10
320
Shading Units
800
32
TMUs
40
8
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
256 KB
Theoretical Performance
4.800 GPixel/s
Pixel Rate
12.00 GPixel/s
19.20 GTexel/s
Texture Rate
30.00 GTexel/s
-
FP16 (half)
-
384.0 GFLOPS
FP32 (float)
1200 GFLOPS
-
FP64 (double)
240.0 GFLOPS
Graphics Processor
RV730
GPU Name
RV770
RV730 PRO (215-0719056)
GPU Variant
RV770 XT (215-0669049)
TeraScale
Architecture
TeraScale
TSMC
Foundry
TSMC
55 nm
Process Size
55 nm
0.514 billion
Transistors
0.956 billion
146 mm²
Die Size
256 mm²
Board Design
48W
TDP
150W
200 W
Suggested PSU
450 W
2x DVI 1x S-Video
Outputs
2x DVI 1x S-Video
-
Power Connectors
2x 6-pin
Graphics Features
10.1 (10_1)
DirectX
10.1 (10_1)
3.3
OpenGL
3.3
1.1
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
-
4.1
Shader Model
4.1
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