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ASUS HD 4870 X2 TOP

  • EAH4870X2-TOP/HTDI/2G
Graphics Processor
R700 x2
Cores
800 x2
TMUs
40 x2
ROPs
16 x2
Memory Size
1024 MB x2
Memory Type
GDDR5
Bus Width
256 bit x2
Front GPU Chip
GPU Chip
GPU
I/O
I/O
Rear
Rear
Back
Back

Graphics Processor

GPU Name
R700
GPU Variant
R700 XT
(215-0669045)
Architecture
TeraScale
Foundry
TSMC
Process Size
55 nm
Transistors
956 million
Density
3.7M / mm²
Die Size
256 mm²

Graphics Card

Release Date
Aug 12th, 2008
Generation
Radeon R700
(HD 4800)
Predecessor
Radeon R600
Successor
Evergreen
Production
End-of-life
Bus Interface
PCIe 2.0 x16

Clock Speeds

GPU Clock
750 MHz
790 MHz (+5%)
Memory Clock
900 MHz
915 MHz (+2%)
3.6 Gbps effective
3.7 Gbps effective

Memory

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

Render Config

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

Theoretical Performance

Pixel Rate
12.00 GPixel/s
12.64 GPixel/s
Texture Rate
30.00 GTexel/s
31.60 GTexel/s
FP32 (float)
1,200 GFLOPS
1,264 GFLOPS
FP64 (double)
240.0 GFLOPS
252.8 GFLOPS (1:5)

Board Design

Slot Width
Dual-slot
Length
267 mm
10.5 inches
Width
111 mm
4.4 inches
Height
38 mm
1.5 inches
TDP
286 W
Suggested PSU
600 W
Outputs
2x DVI
1x S-Video
Power Connectors
1x 6-pin + 1x 8-pin
Board Number
109-B50937-00

Graphics Features

DirectX
10.1 (10_1)
OpenGL
3.3
OpenCL
1.1
Vulkan
N/A
Shader Model
4.1

Card Notes

This is a dual GPU card that features two RV770XT chips and a PCI-E lane arbiter chip made by PLX. The card features a total of 2 GB GDDR5 memory.

R700 GPU Notes

Codename: Wekiva
Graphics/Compute: GFX3
Display Core Engine: 3.1
Unified Video Decoder: 2.0

Other retail boards based on this design (7)

Name GPU Clock Memory Clock Other Changes
ASUS HD 4870 X2 TOP
790 MHz 915 MHz
Gainward Rampage700 GS
750 MHz 950 MHz Triple-slot, 1x DVI 1x HDMI 1x DisplayPort 1x VGA
Gainward Rampage700 GS GLH
790 MHz 950 MHz Triple-slot, 1x DVI 1x HDMI 1x DisplayPort 1x VGA
HIS HD 4870 X2
750 MHz 900 MHz
PowerColor HD 4870 X2
750 MHz 900 MHz
Sapphire HD 4870 X2
750 MHz 900 MHz
Sapphire HD 4870 X2 ATOMIC
800 MHz 1000 MHz Single-slot
Apr 25th, 2024 11:14 EDT change timezone

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