Home GPU Comparison AMD Radeon R9 285 vs NVIDIA GeForce GT 640 OEM

AMD Radeon R9 285 vs NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 285 's Advantages
Released 2 years and 5 months late
Larger VRAM bandwidth (176.0GB/s vs 28.51GB/s)
1408 additional rendering cores
NVIDIA GeForce GT 640 OEM 's Advantages
Lower TDP (50W vs 190W)

Score

Benchmark

FP32 (float)
Radeon R9 285 +437%
3.29 TFLOPS
GeForce GT 640 OEM
0.612 TFLOPS
VS

Graphics Card

Sep 2014
Release Date
Apr 2012
Volcanic Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
-
-
-
-
-
1375 MHz
Memory Clock
891 MHz

Memory

2GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
128bit
176.0GB/s
Bandwidth
28.51GB/s

Render Config

28
Compute Units
-
-
-
-
1792
Shading Units
384
112
TMUs
32
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

29.38 GPixel/s
Pixel Rate
6.376 GPixel/s
102.8 GTexel/s
Texture Rate
25.50 GTexel/s
3.290 TFLOPS
FP16 (half)
-
3.290 TFLOPS
FP32 (float)
612.1 GFLOPS
205.6 GFLOPS
FP64 (double)
25.50 GFLOPS

Board Design

190W
TDP
50W
450 W
Suggested PSU
250 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 6-pin
Power Connectors
None

Graphics Processor

Tonga
GPU Name
GK107
Tonga PRO (215-0851128)
GPU Variant
GK107-320-A2
GCN 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
1.27 billion
366 mm²
Die Size
118 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.1
OpenCL
3.0
1.2.170
Vulkan
1.1
-
CUDA
3.0
6.5
Shader Model
5.1

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