GeForce 6100 + nForce 405 vs Radeon R9 270 1024SP

Primary details

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

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	GCN 1.0 (2012−2020)	Curie (2003−2013)
GPU code name	Pitcairn	C61
Market segment	Desktop	Desktop
Release date	13 March 2015 (10 years ago)	11 October 2004 (21 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	1024	no data
Core clock speed	900 MHz	425 MHz
Boost clock speed	925 MHz	no data
Number of transistors	2,800 million	no data
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	150 Watt	no data
Texture fill rate	59.20	0.43
Floating-point processing power	1.894 TFLOPS	no data
ROPs	32	1
TMUs	64	1
L1 Cache	256 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).

Interface	PCIe 3.0 x16	PCI
Width	2-slot	IGP
Supplementary power connectors	1x 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	System Shared
Maximum RAM amount	2 GB	System Shared
Memory bus width	256 Bit	System Shared
Memory clock speed	1200 MHz	System Shared
Memory bandwidth	153.6 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	2x DVI, 1x HDMI, 1x DisplayPort	No outputs
HDMI	+	-

API and SDK support

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	2.1
OpenCL	1.2	N/A
Vulkan	1.2.131	N/A

Pros & cons summary

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Recency	13 March 2015	11 October 2004
Chip lithography	28 nm	90 nm

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