Home GPU Comparison AMD Radeon HD 6870 X2 vs ATI Radeon HD 4570 Rebrand

AMD Radeon HD 6870 X2 vs ATI Radeon HD 4570 Rebrand

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 1024MB VRAM Radeon HD 4570 Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 X2 's Advantages
Released 1 years and 8 months late
Larger VRAM bandwidth (134.4GB/s vs 12.67GB/s)
1000 additional rendering cores
ATI Radeon HD 4570 Rebrand 's Advantages
Lower TDP (65W vs 300W)

Score

Benchmark

FP32 (float)
Radeon HD 6870 X2 +955%
2.016 TFLOPS
Radeon HD 4570 Rebrand
0.191 TFLOPS
VS

Graphics Card

Jul 2011
Release Date
Nov 2009
Northern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
396 MHz

Memory

1024MB
Memory Size
1024MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
128bit
134.4GB/s
Bandwidth
12.67GB/s

Render Config

-
SM Count
-
14
Compute Units
3
1120
Shading Units
120
56
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
128 KB

Theoretical Performance

28.80 GPixel/s
Pixel Rate
3.184 GPixel/s
50.40 GTexel/s
Texture Rate
6.368 GTexel/s
-
FP16 (half)
-
2.016 TFLOPS
FP32 (float)
191.0 GFLOPS
-
FP64 (double)
-

Graphics Processor

Barts
GPU Name
RV635
Barts XT (215-0798000)
GPU Variant
RV635 PRO (215-0682008)
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
1.7 billion
Transistors
0.378 billion
255 mm²
Die Size
135 mm²

Board Design

300W
TDP
65W
700 W
Suggested PSU
250 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
2x DVI 1x S-Video
-
Power Connectors
-

Graphics Features

11.2 (11_0)
DirectX
10.1 (10_1)
4.4
OpenGL
3.3
1.2
OpenCL
N/A
N/A
Vulkan
N/A
-
CUDA
-
5.0
Shader Model
4.1

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