XFX HD 4890

HD-489A-ZDFC

Graphics Processor

RV790

Cores

800

TMUs

ROPs

Memory Size

1024 MB

Memory Type

GDDR5

Bus Width

256 bit

GPU

I/O

Bottom

Back

Graphics Processor

GPU Name: RV790

GPU Variant: RV790 XT
(215-0758016)

Architecture: TeraScale

Foundry: TSMC

Process Size: 55 nm

Transistors: 959 million

Density: 3.4M / mm²

Die Size: 282 mm²

Graphics Card

Release Date: Apr 2nd, 2009

Generation: Radeon R700
(HD 4800)

Predecessor: Radeon R600

Successor: Evergreen

Production: End-of-life

Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 850 MHz

Memory Clock: 975 MHz
3.9 Gbps effective

Memory

Memory Size: 1024 MB

Memory Type: GDDR5

Memory Bus: 256 bit

Bandwidth: 124.8 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: 13.60 GPixel/s

Texture Rate: 34.00 GTexel/s

FP32 (float): 1,360 GFLOPS

FP64 (double): 272.0 GFLOPS (1:5)

Board Design

Slot Width: Dual-slot

Length: 241 mm
9.5 inches

Width: 111 mm
4.4 inches

TDP: 190 W

Suggested PSU: 450 W

Outputs: 2x DVI
1x S-Video

Power Connectors: 2x 6-pin

Board Number: 109-B79031-00

Graphics Features

DirectX: 10.1 (10_1)

OpenGL: 3.3

OpenCL: 1.1

Vulkan: N/A

Shader Model: 4.1

RV790 GPU Notes

Codename: Wekiva Plus (Spartan)
Graphics/Compute: GFX3
Display Core Engine: 3.1
Unified Video Decoder: 2.0

Other retail boards based on this design (21)

Name	GPU Clock	Memory Clock	Other Changes
ASUS HD 4890 TOP	900 MHz	1000 MHz
Diamond HD 4890 XOC	925 MHz	1050 MHz
GIGABYTE HD 4890	850 MHz	975 MHz
HIS HD 4890 Fan	850 MHz	975 MHz	246 mm/9.7 inches
HIS HD 4890 Fan Turbo	900 MHz	1000 MHz	246 mm/9.7 inches
HIS HD 4890 Fan Turbo+	965 MHz	1050 MHz	246 mm/9.7 inches
HIS HD 4890 iCooler x4	850 MHz	975 MHz	254 mm/10 inches
HIS HD 4890 iCooler x4 Native HDMI	850 MHz	975 MHz	254 mm/10 inches, 1x DVI 1x HDMI 1x VGA
MSI HD 4890 Cyclone SOC	1000 MHz	1000 MHz	1x DVI 1x HDMI 1x VGA
PowerColor HD 4890 LCS	900 MHz	1000 MHz
PowerColor HD 4890 PCS+	950 MHz	975 MHz
Sapphire HD 4890	850 MHz	975 MHz
Sapphire HD 4890 Atomic	1000 MHz	1050 MHz
Sapphire HD 4890 New Edition	850 MHz	975 MHz	1x DVI 1x HDMI 1x DisplayPort
Sapphire HD 4890 Toxic	960 MHz	1050 MHz
Sapphire HD 4890 Vapor-X OC	870 MHz	1050 MHz	1x DVI 1x HDMI 1x DisplayPort 1x VGA
Sapphire HD 4890 Vapor-X OC 2 GB	870 MHz	1050 MHz	2 GB, 1x DVI 1x HDMI 1x DisplayPort 1x VGA
VisionTek HD 4890 OC Edition	950 MHz	1050 MHz
XFX HD 4890	850 MHz	975 MHz
XFX HD 4890 Black Edition	1000 MHz	1000 MHz
XFX HD 4890 XXX Edition	1000 MHz	1000 MHz