NVIDIA GeForce GTX 660 Vs AMD Radeon HD 7770 - Technical City

Primary details

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

Place in the ranking	492	669
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.06	1.27
Power efficiency	5.30	4.99
Architecture	Kepler (2012−2018)	GCN 1.0 (2012−2020)
GPU code name	GK106	Cape Verde
Market segment	Desktop	Desktop
Release date	6 September 2012 (13 years ago)	15 February 2012 (13 years ago)
Launch price (MSRP)	$229	$159

Cost-effectiveness evaluation

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

GTX 660 has 141% better value for money than HD 7770.

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	960	640
Core clock speed	980 MHz	1000 MHz
Boost clock speed	1033 MHz	no data
Number of transistors	2,540 million	1,500 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	140 Watt	80 Watt
Texture fill rate	82.56	40.00
Floating-point processing power	1.981 TFLOPS	1.28 TFLOPS
ROPs	24	16
TMUs	80	40
L1 Cache	80 KB	160 KB
L2 Cache	384 KB	256 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	PCI Express 3.0	no data
Interface	PCIe 3.0 x16	PCIe 3.0 x16
Length	241 mm	210 mm
Height	4.376" (11.1 cm)	no data
Width	2-slot	2-slot
Supplementary power connectors	1x 6-pin	1x 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	192-bit GDDR5	128 Bit
Memory clock speed	6.0 GB/s	1125 MHz
Memory bandwidth	144.2 GB/s	72 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	One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort	1x DVI, 1x HDMI, 2x mini-DisplayPort
Multi monitor support	4 displays	no data
Eyefinity	-	+
HDMI	+	+
HDCP	+	-
Maximum VGA resolution	2048x1536	no data
Audio input for HDMI	Internal	no data

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