Home GPU Comparison ATI Radeon HD 4890 vs ATI Radeon HD 4870 X2

ATI Radeon HD 4890 vs ATI Radeon HD 4870 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 1024MB VRAM Radeon HD 4870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages
Released 8 months late
Larger VRAM bandwidth (124.8GB/s vs 115.2GB/s)
Lower TDP (190W vs 286W)

Score

Benchmark

FP32 (float)
Radeon HD 4890 +13%
1.36 TFLOPS
Radeon HD 4870 X2
1.2 TFLOPS
VS

Graphics Card

Apr 2009
Release Date
Aug 2008
Radeon R700
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
975 MHz
Memory Clock
900 MHz

Memory

1024MB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
124.8GB/s
Bandwidth
115.2GB/s

Render Config

10
Compute Units
10
-
-
-
800
Shading Units
800
40
TMUs
40
16
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

13.60 GPixel/s
Pixel Rate
12.00 GPixel/s
34.00 GTexel/s
Texture Rate
30.00 GTexel/s
-
-
-
1360 GFLOPS
FP32 (float)
1200 GFLOPS
272.0 GFLOPS
FP64 (double)
240.0 GFLOPS

Board Design

190W
TDP
286W
450 W
Suggested PSU
600 W
2x DVI 1x S-Video
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin

Graphics Processor

RV790
GPU Name
R700
RV790 XT (215-0758016)
GPU Variant
R700 XT (215-0669045)
TeraScale
Architecture
TeraScale
TSMC
Foundry
TSMC
55 nm
Process Size
55 nm
0.959 billion
Transistors
0.956 billion
282 mm²
Die Size
256 mm²

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
-
-
-
4.1
Shader Model
4.1

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