ATI Radeon HD 2900 XT vs HD Graphics 400

Place in the ranking	1070	924
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.04
Power efficiency	13.04	0.55
Architecture	Generation 8.0 (2014−2015)	TeraScale (2005−2013)
GPU code name	Braswell GT1	R600
Market segment	Desktop	Desktop
Release date	1 April 2015 (9 years ago)	14 May 2007 (17 years ago)
Launch price (MSRP)	no data	$399

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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	96	320
Core clock speed	320 MHz	743 MHz
Boost clock speed	640 MHz	no data
Number of transistors	189 million	720 million
Manufacturing process technology	14 nm	80 nm
Power consumption (TDP)	6 Watt	215 Watt
Texture fill rate	7.680	11.89
Floating-point processing power	0.1229 TFLOPS	0.4755 TFLOPS
ROPs	2	16
TMUs	12	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).

Interface	PCIe 3.0 x1	PCIe 1.0 x16
Length	no data	241 mm
Width	IGP	2-slot
Supplementary power connectors	no data	1x 6-pin + 1x 8-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	DDR3L	GDDR3
Maximum RAM amount	8 GB	512 MB
Memory bus width	System Shared	512 Bit
Memory clock speed	System Shared	828 MHz
Memory bandwidth	no data	106.0 GB/s

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)	10.0 (10_0)
Shader Model	5.1	4.0
OpenGL	4.3	3.3
OpenCL	2.0	N/A
Vulkan	1.1.80	N/A

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	1.13	1.71
Recency	1 April 2015	14 May 2007
Maximum RAM amount	8 GB	512 MB
Chip lithography	14 nm	80 nm
Power consumption (TDP)	6 Watt	215 Watt

HD Graphics 400 has an age advantage of 7 years, a 1500% higher maximum VRAM amount, a 471.4% more advanced lithography process, and 3483.3% lower power consumption.

ATI HD 2900 XT, on the other hand, has a 51.3% higher aggregate performance score.

The Radeon HD 2900 XT is our recommended choice as it beats the HD Graphics 400 in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.