Radeon HD 6930 vs ATI HD 4870

Place in the ranking	720	536
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.27	2.00
Power efficiency	1.74	2.86
Architecture	TeraScale (2005−2013)	TeraScale 3 (2010−2013)
GPU code name	RV770	Cayman
Market segment	Desktop	Desktop
Release date	25 June 2008 (16 years ago)	1 December 2011 (12 years ago)
Launch price (MSRP)	$299	$180

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

HD 6930 has 641% better value for money than ATI HD 4870.

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	800	1280
Core clock speed	750 MHz	750 MHz
Number of transistors	956 million	2,640 million
Manufacturing process technology	55 nm	40 nm
Power consumption (TDP)	150 Watt	186 Watt
Texture fill rate	30.00	60.00
Floating-point processing power	1.2 TFLOPS	1.92 TFLOPS
ROPs	16	32
TMUs	40	80

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 2.0 x16	PCIe 2.0 x16
Length	250 mm	220 mm
Width	2-slot	2-slot
Supplementary power connectors	2x 6-pin	2x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	GDDR5
Maximum RAM amount	1 GB	1 GB
Memory bus width	256 Bit	256 Bit
Memory clock speed	900 MHz	1200 MHz
Memory bandwidth	115.2 GB/s	153.6 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	2x DVI, 1x S-Video	2x DVI, 1x HDMI, 2x mini-DisplayPort
HDMI	-	+

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	10.1 (10_1)	11.2 (11_0)
Shader Model	4.1	5.0
OpenGL	3.3	4.4
OpenCL	1.1	1.2
Vulkan	N/A	N/A

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	3.56	7.25
Recency	25 June 2008	1 December 2011
Chip lithography	55 nm	40 nm
Power consumption (TDP)	150 Watt	186 Watt

ATI HD 4870 has 24% lower power consumption.

HD 6930, on the other hand, has a 103.7% higher aggregate performance score, an age advantage of 3 years, and a 37.5% more advanced lithography process.

The Radeon HD 6930 is our recommended choice as it beats the Radeon HD 4870 in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.