ATI Mobility Radeon X1800XT vs HD 7870 XT

Primary details

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

Place in the ranking	473	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.17	no data
Power efficiency	4.45	no data
Architecture	GCN 1.0 (2012−2020)	no data
GPU code name	Tahiti	M58, R520
Market segment	Desktop	Laptop
Release date	19 November 2012 (13 years ago)	1 March 2006 (20 years ago)
Launch price (MSRP)	$270	no data

Cost-effectiveness evaluation

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

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	1536	24
Core clock speed	925 MHz	8 MHz
Boost clock speed	975 MHz	550 MHz
Number of transistors	4,313 million	no data
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	185 Watt	no data
Texture fill rate	93.60	no data
Floating-point processing power	2.995 TFLOPS	no data
ROPs	32	no data
TMUs	96	no data
L1 Cache	384 KB	no data
L2 Cache	512 KB	no data

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).

Laptop size	no data	large
Interface	PCIe 3.0 x16	no data
Length	267 mm	no data
Width	2-slot	no data
Supplementary power connectors	2x 6-pin	no data

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	GDDR3
Maximum RAM amount	2 GB	no data
Memory bus width	256 Bit	256 Bit
Memory clock speed	1500 MHz	650 MHz
Memory bandwidth	192.0 GB/s	no data
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	no data
HDMI	+	-

API and SDK support

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

DirectX	12 (11_1)	GDDR3
Shader Model	5.1	no data
OpenGL	4.6	no data
OpenCL	1.2	no data
Vulkan	1.2.131	-

Pros & cons summary

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Recency	19 November 2012	1 March 2006
Chip lithography	28 nm	90 nm