AMD Radeon HD 7870 Vs NVIDIA GeForce GTX 660 Ti

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking	462	474
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.57	2.80
Power efficiency	4.80	5.40
Architecture	GCN 1.0 (2012−2020)	Kepler (2012−2018)
GPU code name	Pitcairn	GK104
Market segment	Desktop	Desktop
Release date	5 March 2012 (13 years ago)	16 August 2012 (13 years ago)
Launch price (MSRP)	$349	$299

Cost-effectiveness evaluation

The higher the ratio, the better. We use the manufacturer's recommended prices.

GTX 660 Ti has 9% better value for money than HD 7870.

Performance to price scatter graph

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	1280	1344
Core clock speed	1000 MHz	915 MHz
Boost clock speed	no data	980 MHz
Number of transistors	2,800 million	3,540 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	175 Watt	150 Watt
Texture fill rate	80.00	109.8
Floating-point processing power	2.56 TFLOPS	2.634 TFLOPS
ROPs	32	24
TMUs	80	112
L1 Cache	320 KB	112 KB
L2 Cache	512 KB	384 KB

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).

Bus support	no data	PCI Express 3.0
Interface	PCIe 3.0 x16	PCIe 3.0 x16
Length	241 mm	241 mm
Height	no data	4.376" (11.1 cm)
Width	2-slot	2-slot
Supplementary power connectors	2x 6-pin	2x 6-pin
SLI options	-	+

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	2 GB	2 GB
Memory bus width	256 Bit	192-bit GDDR5
Memory clock speed	1200 MHz	6.0 GB/s
Memory bandwidth	153.6 GB/s	144.2 GB/s
Shared memory	-	-

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors	1x DVI, 1x HDMI, 2x mini-DisplayPort	One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Multi monitor support	no data	4 displays
Eyefinity	+	-
HDMI	+	+
HDCP	-	+
Maximum VGA resolution	no data	2048x1536
Audio input for HDMI	no data	Internal

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Blu-Ray	-	+
3D Gaming	-	+
3D Vision	-	+

API and SDK support

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

DirectX	12 (11_1)	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.6	4.3
OpenCL	1.2	1.2
Vulkan	1.2.131	1.1.126
CUDA	-	+