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GPU Comparison
NVIDIA GeForce GT 640 OEM vs ATI Radeon HD 4830
NVIDIA GeForce GT 640 OEM vs ATI Radeon HD 4830
VS
NVIDIA GeForce GT 640 OEM
ATI Radeon HD 4830
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 OEM and 512MB VRAM Radeon HD 4830 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 OEM 's Advantages
Released 3 years and 6 months late
Lower TDP (50W vs 95W)
ATI Radeon HD 4830 's Advantages
Larger VRAM bandwidth (57.60GB/s vs 28.51GB/s)
256 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640 OEM
0.612 TFLOPS
Radeon HD 4830
+20%
0.736 TFLOPS
GeForce GT 640 OEM
VS
Radeon HD 4830
Graphics Card
Apr 2012
Release Date
Oct 2008
GeForce 600
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
891 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
512MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
256bit
28.51GB/s
Bandwidth
57.60GB/s
Render Config
-
SM Count
-
-
Compute Units
8
384
Shading Units
640
32
TMUs
32
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
Theoretical Performance
6.376 GPixel/s
Pixel Rate
9.200 GPixel/s
25.50 GTexel/s
Texture Rate
18.40 GTexel/s
-
FP16 (half)
-
612.1 GFLOPS
FP32 (float)
736.0 GFLOPS
25.50 GFLOPS
FP64 (double)
147.2 GFLOPS
Graphics Processor
GK107
GPU Name
RV770
GK107-320-A2
GPU Variant
RV770 LE (215-0669075)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.956 billion
118 mm²
Die Size
256 mm²
Board Design
50W
TDP
95W
250 W
Suggested PSU
250 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x S-Video
None
Power Connectors
1x 6-pin
Graphics Features
12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
4.1
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