Home GPU Comparison ATI Radeon HD 3870 Mac Edition vs NVIDIA GeForce GTX 650

ATI Radeon HD 3870 Mac Edition vs NVIDIA GeForce GTX 650

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 1024MB VRAM GeForce GTX 650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 650 's Advantages
Released 4 years and 3 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (80.00GB/s vs 72.06GB/s)
64 additional rendering cores
Lower TDP (65W vs 106W)

Score

Benchmark

FP32 (float)
Radeon HD 3870 Mac Edition
0.497 TFLOPS
GeForce GTX 650 +63%
0.812 TFLOPS
VS

Graphics Card

Jun 2008
Release Date
Sep 2012
Radeon R600
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
-
-
-
-
-
1126 MHz
Memory Clock
1250 MHz

Memory

512MB
Memory Size
1024MB
GDDR4
Memory Type
GDDR5
256bit
Memory Bus
128bit
72.06GB/s
Bandwidth
80.00GB/s

Render Config

4
Compute Units
-
-
-
-
320
Shading Units
384
16
TMUs
32
16
ROPs
16
-
-
-
-
-
-
-
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

12.43 GPixel/s
Pixel Rate
8.464 GPixel/s
12.43 GTexel/s
Texture Rate
33.86 GTexel/s
-
-
-
497.3 GFLOPS
FP32 (float)
812.5 GFLOPS
99.46 GFLOPS
FP64 (double)
33.86 GFLOPS

Board Design

106W
TDP
65W
300 W
Suggested PSU
250 W
2x DVI 1x S-Video
Outputs
2x DVI 1x mini-HDMI 1.4a
1x 6-pin
Power Connectors
1x 6-pin

Graphics Processor

RV670
GPU Name
GK107
RV670 XT (215-0708005)
GPU Variant
GK107-450-A2
TeraScale
Architecture
Kepler
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.666 billion
Transistors
1.27 billion
192 mm²
Die Size
118 mm²

Graphics Features

10.1 (10_1)
DirectX
12 (11_0)
3.3 (full) 4.0 (partial)
OpenGL
4.6
N/A
OpenCL
3.0
N/A
Vulkan
1.1
-
CUDA
3.0
4.1
Shader Model
5.1

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