ATI Radeon HD 5450 PCIe x1 vs GeForce 6800 GT

Primary details

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

Place in the ranking1271not rated
Place by popularitynot in top-100not in top-100
Power efficiency0.39no data
ArchitectureCurie (2003−2013)TeraScale 2 (2009−2015)
GPU code nameNV45Cedar
Market segmentDesktopDesktop
Release date8 June 2004 (20 years ago)4 February 2010 (14 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 coresno data80
Core clock speed350 MHz650 MHz
Number of transistors222 million292 million
Manufacturing process technology130 nm40 nm
Power consumption (TDP)67 Watt19 Watt
Texture fill rate5.6005.200
Floating-point processing powerno data0.104 TFLOPS
ROPs164
TMUs168

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).

InterfacePCIe 1.0 x16PCIe 2.0 x1
Lengthno data170 mm
Width1-slot1-slot
Supplementary power connectors1x 6-pinno 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 typeGDDR3DDR3
Maximum RAM amount256 MB512 MB
Memory bus width256 Bit64 Bit
Memory clock speed500 MHz500 MHz
Memory bandwidth32 GB/s8 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 Connectors2x DVI, 1x S-Video1x DVI, 1x HDMI, 1x VGA
HDMI-+

API compatibility

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

DirectX9.0c (9_3)11.2 (11_0)
Shader Model3.05.0
OpenGL2.14.4
OpenCLN/A1.2
VulkanN/AN/A

Pros & cons summary


Recency 8 June 2004 4 February 2010
Maximum RAM amount 256 MB 512 MB
Chip lithography 130 nm 40 nm
Power consumption (TDP) 67 Watt 19 Watt

ATI HD 5450 PCIe x1 has an age advantage of 5 years, a 100% higher maximum VRAM amount, a 225% more advanced lithography process, and 252.6% lower power consumption.

We couldn't decide between GeForce 6800 GT and Radeon HD 5450 PCIe x1. We've got no test results to judge.


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

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


NVIDIA GeForce 6800 GT
GeForce 6800 GT
ATI Radeon HD 5450 PCIe x1
Radeon HD 5450 PCIe x1

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


2.6 106 votes

Rate GeForce 6800 GT on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.4 19 votes

Rate Radeon HD 5450 PCIe x1 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.