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ATI Radeon HD 4860

Graphics Processor
RV790
Cores
640
TMUs
32
ROPs
16
Memory Size
512 MB
Memory Type
GDDR5
Bus Width
256 bit
The Radeon HD 4860 was a graphics card by ATI, launched in September 2009. Built on the 55 nm process, and based on the RV790 graphics processor, in its RV790 GT variant, the card supports DirectX 10.1. Since Radeon HD 4860 does not support DirectX 11 or DirectX 12, it might not be able to run all the latest games. The RV790 graphics processor is an average sized chip with a die area of 282 mm² and 959 million transistors. Unlike the fully unlocked Radeon HD 4890, which uses the same GPU but has all 800 shaders enabled, ATI has disabled some shading units on the Radeon HD 4860 to reach the product's target shader count. It features 640 shading units, 32 texture mapping units, and 16 ROPs. ATI has paired 512 MB GDDR5 memory with the Radeon HD 4860, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 700 MHz, memory is running at 750 MHz (3 Gbps effective).
Being a dual-slot card, the ATI Radeon HD 4860 draws power from 2x 6-pin power connectors, with power draw rated at 130 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4860 is connected to the rest of the system using a PCI-Express 2.0 x16 interface.

Graphics Processor

GPU Name
RV790
GPU Variant
RV790 GT
Architecture
TeraScale
Foundry
TSMC
Process Size
55 nm
Transistors
959 million
Die Size
282 mm²

Graphics Card

Release Date
Sep 9th, 2009
Generation
Radeon R700
(HD 4800)
Production
End-of-life
Bus Interface
PCIe 2.0 x16

Relative Performance

14%
GeForce 210
18%
GeForce 9400 GT
23%
Radeon HD 4550
29%
Radeon HD 5450
34%
Radeon HD 6450
36%
GeForce GT 520
45%
GeForce GT 220
58%
GeForce GT 430
59%
Radeon HD 5570
64%
Radeon HD 4670
68%
GeForce GT 440
69%
GeForce GT 240
79%
GeForce 9600 GT
84%
Radeon HD 5670
90%
GeForce GT 640
93%
GeForce 9800 GT
97%
Radeon HD 6670
100%
Radeon HD 4860
100%
Radeon HD 4830
107%
Radeon HD 4770
113%
Radeon HD 4850
115%
GeForce GTS 250
119%
GeForce GTS 450
123%
Radeon HD 5750
141%
Radeon HD 7750
142%
Radeon HD 5770
144%
GeForce GTX 260
146%
Radeon HD 4870
146%
Radeon Vega 8
148%
GeForce GTX 550 Ti
149%
GeForce GTX 650
158%
Radeon HD 5830
166%
Radeon HD 6790
169%
Radeon HD 4890
175%
GeForce GTX 460
176%
Radeon RX Vega 11
178%
GeForce GT 1030
180%
GeForce GTX 275
180%
Radeon HD 7770 GHz Edition
180%
GeForce GTX 280
184%
GeForce GTX 465
193%
Radeon HD 6850
197%
GeForce GTX 285
211%
Radeon HD 5850
215%
GeForce GTX 650 Ti
215%
Radeon HD 7790
224%
Radeon RX 550
224%
GeForce GTX 470
232%
Radeon HD 6870
248%
Radeon HD 5870
256%
GeForce GTX 560 Ti
257%
Radeon HD 4870 X2
262%
GeForce GTX 750 Ti
263%
Radeon HD 6950
272%
GeForce GTX 295
276%
GeForce GTX 650 Ti Boost
278%
Radeon HD 7850
282%
GeForce GTX 480
296%
Radeon HD 6970
301%
Radeon R7 265
306%
Radeon RX 460
306%
Radeon R7 370
307%
GeForce GTX 660
308%
GeForce GTX 570
313%
Radeon RX 560
333%
GeForce GTX 950
336%
Radeon HD 7870 GHz Edition
344%
Radeon R9 270X
348%
GeForce GTX 660 Ti
350%
GeForce GTX 580
352%
GeForce GTX 1050
353%
Radeon HD 7950
360%
Radeon HD 5970
370%
GeForce GTX 760
399%
GeForce GTX 670
409%
GeForce GTX 960
419%
Radeon R9 380
422%
Radeon R9 285
426%
Radeon HD 7970
431%
GeForce GTX 680
441%
GeForce GTX 1050 Ti
452%
GeForce GTX 770
463%
Radeon HD 6990
474%
Radeon R9 280X
480%
GeForce GTX 590
481%
Radeon HD 7970 GHz Edition
532%
GeForce GTX 780
551%
GeForce GTX 1650
586%
Radeon RX 470
594%
Radeon R9 290
626%
Radeon RX 570
634%
Radeon R9 390
637%
Radeon R9 290X
646%
GeForce GTX 970
654%
GeForce GTX TITAN
663%
GeForce GTX 780 Ti
672%
Radeon R9 390X
675%
Radeon HD 7990
679%
Radeon RX 480
684%
GeForce GTX 690
703%
GeForce GTX 1060 6 GB
712%
Radeon RX 5500 OEM
721%
Radeon RX 580
727%
Radeon RX 5500 XT
736%
GeForce GTX 980
742%
GeForce GTX 1650 SUPER
746%
Radeon R9 FURY
779%
Radeon RX 590
820%
Radeon R9 295X2
825%
GeForce GTX 1660
834%
Radeon R9 FURY X
848%
GeForce GTX 980 Ti
870%
GeForce GTX TITAN X
926%
GeForce GTX 1660 SUPER
947%
GeForce GTX 1660 Ti
947%
GeForce GTX 1070
1008%
Radeon RX Vega 56
1069%
GeForce GTX 1070 Ti
1099%
Radeon RX Vega 64
1115%
GeForce RTX 2060
1115%
GeForce GTX 1080
1161%
Radeon RX 5700
1252%
GeForce RTX 2060 SUPER
1298%
GeForce RTX 2070
1329%
Radeon RX 5700 XT
1344%
Radeon VII
1379%
TITAN X Pascal
1420%
GeForce GTX 1080 Ti
1435%
GeForce RTX 2070 SUPER
1527%
GeForce RTX 2080
1619%
GeForce RTX 2080 SUPER
1787%
GeForce RTX 2080 Ti
2358%
GeForce RTX 3080
2595%
GeForce RTX 3090
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
700 MHz
Memory Clock
750 MHz
3 Gbps effective

Memory

Memory Size
512 MB
Memory Type
GDDR5
Memory Bus
256 bit
Bandwidth
96.00 GB/s

Render Config

Shading Units
640
TMUs
32
ROPs
16
Compute Units
8
L1 Cache
16 KB (per CU)
L2 Cache
256 KB

Theoretical Performance

Pixel Rate
11.20 GPixel/s
Texture Rate
22.40 GTexel/s
FP32 (float) performance
896.0 GFLOPS
FP64 (double) performance
179.2 GFLOPS (1:5)

Board Design

Slot Width
Dual-slot
TDP
130 W
Suggested PSU
350 W
Outputs
2x DVI
1x S-Video
Power Connectors
2x 6-pin
Board Number
B932

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

Retail boards based on this design (1)

Name GPU Clock Memory Clock Other Changes
Sapphire HD 4860 1 GB 700 MHz 750 MHz 1024 MB, 1x DVI 1x HDMI 1x DisplayPort