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ATI Radeon HD 4870

Graphics Processor
RV770
Cores
800
TMUs
40
ROPs
16
Memory Size
512 MB
Memory Type
GDDR5
Bus Width
256 bit
GPU Chip
GPU
PCB Front
PCB Front
PCB Back
PCB Back
The Radeon HD 4870 was a performance graphics card by ATI, launched in June 2008. Built on the 55 nm process, and based on the RV770 graphics processor, in its RV770 XT variant, the card supports DirectX 10.1. The RV770 graphics processor is an average sized chip with a die area of 256 mm² and 956 million transistors. It features 800 shading units, 40 texture mapping units and 16 ROPs. ATI has placed 512 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 750 MHz, memory is running at 900 MHz.
Being a dual-slot card, the ATI Radeon HD 4870 draws power from 2x 6-pin power connectors, with power draw rated at 150 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4870 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 250 mm in length, and features a dual-slot cooling solution. Its price at launch was 299 US Dollars.

Graphics Processor

GPU Name
RV770
GPU Variant
RV770 XT
(215-0669049)
Architecture
TeraScale
Foundry
TSMC
Process Size
55 nm
Transistors
956 million
Die Size
256 mm²

Graphics Card

Release Date
Jun 25th, 2008
Generation
Radeon R700
(HD 4800)
Production
End-of-life
Launch Price
299 USD
Bus Interface
PCIe 2.0 x16
Reviews
135 in our database

Relative Performance

10%
GeForce 210
13%
GeForce 9400 GT
16%
Radeon HD 4550
20%
Radeon HD 5450
23%
Radeon HD 6450
25%
GeForce GT 520
31%
GeForce GT 220
40%
GeForce GT 430
40%
Radeon HD 5570
44%
Radeon HD 4670
46%
GeForce GT 440
47%
GeForce GT 240
54%
GeForce 9600 GT
58%
Radeon HD 5670
62%
GeForce GT 640
64%
GeForce 9800 GT
67%
Radeon HD 6670
69%
Radeon HD 4830
73%
Radeon HD 4770
77%
Radeon HD 4850
79%
GeForce GTS 250
81%
GeForce GTS 450
84%
Radeon HD 5750
96%
Radeon HD 7750
97%
Radeon HD 5770
99%
GeForce GTX 260
100%
Radeon HD 4870
100%
Radeon Vega 8
101%
GeForce GTX 550 Ti
102%
GeForce GTX 650
108%
Radeon HD 5830
114%
Radeon HD 6790
116%
Radeon HD 4890
120%
GeForce GTX 460
121%
Radeon RX Vega 11
122%
GeForce GT 1030
123%
GeForce GTX 275
123%
Radeon HD 7770 GHz Edition
124%
GeForce GTX 280
126%
GeForce GTX 465
132%
Radeon HD 6850
135%
GeForce GTX 285
144%
Radeon HD 5850
147%
GeForce GTX 650 Ti
147%
Radeon HD 7790
153%
Radeon RX 550
154%
GeForce GTX 470
159%
Radeon HD 6870
170%
Radeon HD 5870
175%
GeForce GTX 560 Ti
176%
Radeon HD 4870 X2
179%
GeForce GTX 750 Ti
180%
Radeon HD 6950
187%
GeForce GTX 295
189%
GeForce GTX 650 Ti Boost
190%
Radeon HD 7850
193%
GeForce GTX 480
203%
Radeon HD 6970
206%
Radeon R7 265
210%
Radeon RX 460
210%
Radeon R7 370
211%
GeForce GTX 660
211%
GeForce GTX 570
215%
Radeon RX 560
228%
GeForce GTX 950
230%
Radeon HD 7870 GHz Edition
236%
Radeon R9 270X
238%
GeForce GTX 660 Ti
240%
GeForce GTX 580
241%
GeForce GTX 1050
242%
Radeon HD 7950
247%
Radeon HD 5970
254%
GeForce GTX 760
273%
GeForce GTX 670
280%
GeForce GTX 960
287%
Radeon R9 380
289%
Radeon R9 285
292%
Radeon HD 7970
295%
GeForce GTX 680
302%
GeForce GTX 1050 Ti
310%
GeForce GTX 770
317%
Radeon HD 6990
324%
Radeon R9 280X
329%
GeForce GTX 590
329%
Radeon HD 7970 GHz Edition
365%
GeForce GTX 780
378%
GeForce GTX 1650
401%
Radeon RX 470
407%
Radeon R9 290
429%
Radeon RX 570
434%
Radeon R9 390
436%
Radeon R9 290X
442%
GeForce GTX 970
448%
GeForce GTX TITAN
454%
GeForce GTX 780 Ti
461%
Radeon R9 390X
463%
Radeon HD 7990
465%
Radeon RX 480
469%
GeForce GTX 690
494%
Radeon RX 580
504%
GeForce GTX 980
511%
Radeon R9 FURY
511%
GeForce GTX 1060 6 GB
534%
Radeon RX 590
562%
Radeon R9 295X2
565%
GeForce GTX 1660
572%
Radeon R9 FURY X
581%
GeForce GTX 980 Ti
596%
GeForce GTX TITAN X
649%
GeForce GTX 1660 Ti
649%
GeForce GTX 1070
690%
Radeon RX Vega 56
732%
GeForce GTX 1070 Ti
753%
Radeon RX Vega 64
764%
GeForce GTX 1080
764%
GeForce RTX 2060
795%
Radeon RX 5700
858%
GeForce RTX 2060 SUPER
889%
GeForce RTX 2070
910%
Radeon RX 5700 XT
921%
Radeon VII
944%
TITAN X Pascal
973%
GeForce GTX 1080 Ti
983%
GeForce RTX 2070 SUPER
1046%
GeForce RTX 2080
1109%
GeForce RTX 2080 SUPER
1224%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
750 MHz
Memory Clock
900 MHz
3600 MHz effective

Memory

Memory Size
512 MB
Memory Type
GDDR5
Memory Bus
256 bit
Bandwidth
115.2 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
Texture Rate
30.00 GTexel/s
FP32 (float) performance
1,200 GFLOPS
FP64 (double) performance
240.0 GFLOPS (1:5)

Board Design

Slot Width
Dual-slot
Length
9.84 inches
250 mm
TDP
150 W
Outputs
2x DVI
1x S-Video
Power Connectors
2x 6-pin
Board Number
B507-31

Graphics Features

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

RV770 GPU Notes

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

Retail boards based on this design (17)

Name GPU Clock Memory Clock Other Changes
ASUS HD 4870 DK TOP 815 MHz 925 MHz 9.5 inches/241 mm
ASUS HD 4870 TOP 815 MHz 925 MHz 9.5 inches/241 mm
ASUS ROG Matrix HD 4870 770 MHz 920 MHz 9.5 inches/241 mm
HIS HD 4870 IceQ 4+ Turbo 780 MHz 1000 MHz
HIS HD 4870 IceQ 4+ Turbo 1 GB 770 MHz 1000 MHz 1024 MB
HIS HD 4870 Turbo 780 MHz 1000 MHz 9.69 inches/246 mm
Palit HD 4870 Sonic Dual 775 MHz 1000 MHz 1x DVI 1x HDMI 1x DisplayPort 1x VGA
Palit HD 4870 Sonic Dual 775 MHz 1000 MHz 2x DVI 1x DisplayPort
PowerColor HD 4870 LCS 800 MHz 950 MHz 9.49 inches/241 mm, Single-slot
Sapphire HD 4870 Toxic 780 MHz 1000 MHz
Sapphire HD 4870 Toxic 1 GB 780 MHz 1000 MHz 1024 MB, 1x DVI 1x HDMI 1x VGA
Sapphire HD 4870 Vapor-X 1 GB 750 MHz 900 MHz 1024 MB, 1x DVI 1x HDMI 1x VGA
Sapphire HD 4870 Vapor-X 2 GB 750 MHz 900 MHz 2 GB, 1x DVI 1x HDMI 1x VGA
XFX HD 4870 750 MHz 900 MHz 9.5 inches/241 mm, Single-slot, 2x DVI
XFX HD 4870 1 GB 750 MHz 900 MHz 1024 MB
XFX HD 4870 XXX 775 MHz 950 MHz
XFX HD 4870 XXX 1 GB 775 MHz 950 MHz 1024 MB