ATI Radeon X1800 CrossFire Edition vs HD 8790M

Primary details

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

Place in the ranking	733	not rated
Place by popularity	not in top-100	not in top-100
Architecture	GCN 1.0 (2011−2020)	R500 (2005−2007)
GPU code name	Mars	R520
Market segment	Laptop	Desktop
Release date	1 April 2013 (11 years ago)	20 December 2005 (19 years ago)

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	384	no data
Core clock speed	850 MHz	600 MHz
Boost clock speed	900 MHz	no data
Number of transistors	950 million	321 million
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	unknown	113 Watt
Texture fill rate	21.60	9.600
Floating-point processing power	0.6912 TFLOPS	no data
ROPs	8	16
TMUs	24	16

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	medium sized	no data
Interface	MXM-A (3.0)	PCIe 1.0 x16
Width	no data	2-slot
Supplementary power connectors	None	1x 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	GDDR3
Maximum RAM amount	2 GB	512 MB
Memory bus width	128 Bit	256 Bit
Memory clock speed	1000 MHz	700 MHz
Memory bandwidth	64 GB/s	44.8 GB/s
Shared memory	-	-

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

No outputs

2x DVI, 1x S-Video

API compatibility

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

DirectX	12 (11_1)	9.0c (9_3)
Shader Model	5.1	3.0
OpenGL	4.6	2.0
OpenCL	1.2	N/A
Vulkan	1.2.131	N/A

Pros & cons summary

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Recency	1 April 2013	20 December 2005
Maximum RAM amount	2 GB	512 MB
Chip lithography	28 nm	90 nm

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