Sapphire HD 4850 Toxic

100242TXSR

Graphics Processor

RV770

Cores

800

TMUs

ROPs

Memory Size

512 MB

Memory Type

GDDR3

Bus Width

256 bit

GPU

Graphics Processor

GPU Name: RV770

GPU Variant: RV770 PRO
(215-0669065)

Architecture: TeraScale

Foundry: TSMC

Process Size: 55 nm

Transistors: 956 million

Density: 3.7M / mm²

Die Size: 256 mm²

Chip Package: HFCBGA-1492

Graphics Card

Release Date: ~~Jun 25th, 2008~~
Jun 27th, 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: ~~625 MHz~~
675 MHz (+8%)

Memory Clock: ~~993 MHz~~
1150 MHz (+16%)
~~1986 Mbps effective~~
2.3 Gbps effective

Memory

Memory Size: 512 MB

Memory Type: GDDR3

Memory Bus: 256 bit

Bandwidth: ~~63.55 GB/s~~
73.60 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: ~~10.00 GPixel/s~~
10.80 GPixel/s

Texture Rate: ~~25.00 GTexel/s~~
27.00 GTexel/s

FP32 (float): ~~1,000 GFLOPS~~
1,080 GFLOPS

FP64 (double): ~~200.0 GFLOPS~~
216.0 GFLOPS (1:5)

Board Design

Slot Width: Single-slot

TDP: 110 W

Suggested PSU: 300 W

Outputs: 2x DVI
1x S-Video

Power Connectors: 1x 6-pin

Board Number: 109-B50131-00

Graphics Features

DirectX: 10.1 (10_1)

OpenGL: 3.3

OpenCL: 1.1

Vulkan: N/A

Shader Model: 4.1

RV770 GPU Notes

Mobile Variant: M98
Codename: Wekiva
Graphics/Compute: GFX3
Display Core Engine: 3.1
Unified Video Decoder: 2.0

Latest Drivers:
Windows XP / 8:
Catalyst Software Suite 13.1 / 13.4 Beta

Windows Vista / 7:
Catalyst Software Suite 13.9

Other retail boards based on this design (13)

Name	GPU Clock	Memory Clock	Other Changes
ASUS HD 4850 CUcore TOP 1 GB	670 MHz	1004 MHz	1024 MB, Dual-slot, 2x DVI
ASUS HD 4850 TOP	680 MHz	1050 MHz
ASUS ROG Matrix HD 4850	625 MHz	993 MHz	Dual-slot
HIS HD 4850 IceQ 4 TurboX	685 MHz	1100 MHz	Dual-slot
Palit HD 4850 Sonic 1 GB	685 MHz	1000 MHz	1024 MB, Dual-slot
Palit HD 4850 Sonic Special	700 MHz	900 MHz	GDDR5, Dual-slot, 1x DVI 1x HDMI 1x DisplayPort 1x VGA
PowerColor HD 4850 PCS+	675 MHz	1100 MHz	GDDR4, 241 mm/9.5 inches
PowerColor HD 4850 PCS+ 1 GB	665 MHz	950 MHz	1024 MB, 241 mm/9.5 inches
Sapphire HD 4850	625 MHz	1008 MHz
Sapphire HD 4850 1 GB	625 MHz	993 MHz	1024 MB
Sapphire HD 4850 Toxic	675 MHz	1150 MHz
Sapphire HD 4850 Vapor-X	650 MHz	1000 MHz	1x DVI 1x HDMI 1x VGA
Sapphire HD 4850 Vapor-X 1 GB	650 MHz	1000 MHz	1024 MB, 1x DVI 1x HDMI 1x VGA