Contents:HighlightsSummaryGaming PerformanceBenchmark PerformanceTechnical SpecsRelated ComparisonsRelated GPUs
Performance
Radeon RX 6900 XT9,389% better
59,11957% of 104,598
Radeon HD 6450
6231% of 104,598
The Radeon RX 6900 XT has 9,389% better performance than the Radeon HD 6450 for the 3DMark 11 Performance GPU benchmark.
Performance per dollar
Radeon RX 6900 XT422% better
59.1837% of 161.45
Radeon HD 6450
11.337% of 161.45
The Radeon RX 6900 XT has 422% better value for the money than the Radeon HD 6450 for the 3DMark 11 Performance GPU benchmark.
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Summary
#
About the AMD Radeon RX 6900 XT GPU
The AMD Radeon RX 6900 XT is a desktop graphics card that launched in Q4 2020 with a MSRP of $999. It is built on the RDNA 2.0 GPU microarchitecture (codename Navi 21) and is manufactured on a 7 nm process.
Memory
The RX 6900 XT has 16 GB of GDDR6 memory, with a 2,000 MHz memory clock and a 256 bit interface. This gives it a memory bandwidth of 512 Gb/s, which affects how fast it can transfer data to and from memory. GPU memory stores temporary data that helps the GPU with complex math and graphics operations. More memory is generally better, as not having enough can cause performance bottlenecks.
Cores and Clock Speeds
The RX 6900 XT includes 5,120 stream processors (SPs), the processing units for handling parallel computing tasks. The GPU operates at a core clock speed of 1,825 MHz and can dynamically boost its clock speed up to 2,250 MHz. It usually operates at 2,015 MHz during typical gaming workloads. Complementing the processing units are 320 texture mapping units (TMUs) for efficient texture filtering and 128 render output units (ROPs) for pixel processing. Additionally, the GPU features 80 ray accelerators dedicated to real-time ray tracing calculations.
Compatibility & Power Consumption
The RX 6900 XT is a large graphics card, occupying 3 PCIe 4.0 x16 expansion slots. It supports HDMI 2.1, DisplayPort 1.4a, USB Type-C display connections. With a thermal design power (TDP) of 300 W and a large, 3-slot size, it is recommended to use a power supply of 700 W and a case with sufficient space to accommodate the card. Compare your card's model and your case's dimensions to verify compatibility.
Benchmark Performance & Value
The RX 6900 XT has the 18th best 3DMark 11 Performance GPU score among the 543 benchmarked GPUs in our database. It achieves 56.52% of the performance of the best benchmarked GPU, the NVIDIA GeForce RTX 4090. Its 59,119 score and $999 launch price (MSRP) gives it a performance per dollar of 59.18. This is the 55th best in value for the 3DMark 11 Performance GPU benchmark.
About the AMD Radeon HD 6450 GPU
The AMD Radeon HD 6450 is an end-of-life desktop graphics card that released in Q2 2011 with a MSRP of $55. It is built on the TeraScale 2 GPU microarchitecture (codename Caicos) and is manufactured on a 40 nm process.
Memory
The HD 6450 has 512 MB of DDR3, GDDR5 memory, with a 500 MHz memory clock and a 64 bit interface. This gives it a memory bandwidth of 8 Gb/s, which affects how fast it can transfer data to and from memory. GPU memory stores temporary data that helps the GPU with complex math and graphics operations. More memory is generally better, as not having enough can cause performance bottlenecks.
Cores and Clock Speeds
The HD 6450 includes 160 stream processors (SPs), the processing units for handling parallel computing tasks. The GPU operates at a core clock speed of 625 MHz. Complementing the processing units are 8 texture mapping units (TMUs) for efficient texture filtering and 4 render output units (ROPs) for pixel processing.
Compatibility & Power Consumption
The HD 6450 is a compact, low-profile graphics card that fits into 1 PCIe expansion slot. It supports DVI, HDMI 1.3a, VGA display connections. AMD recommends a power supply of at least 200 W to handle the GPU's thermal design power (TDP) of 18 W.
Benchmark Performance & Value
The HD 6450 has the 500th best 3DMark 11 Performance GPU score among the 543 benchmarked GPUs in our database. It achieves 0.60% of the performance of the best benchmarked GPU, the NVIDIA GeForce RTX 4090. Its 623 score and $55 launch price (MSRP) gives it a performance per dollar of 11.33. This is the 96th best in value for the 3DMark 11 Performance GPU benchmark.
General Info
General overview of the GPU, including details like its manufacturer, release date, launch price, and current production status.
| Info | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Architecture | RDNA 2.0 | TeraScale 2 |
| Market Segment | Desktop | Desktop |
| Release Date | Q4 2020 | Q2 2011 |
| Launch Price (MSRP) | $999 | $55 |
| Production Status | Active | End-of-life |
| Shop | Check Price | Check Price |
Gaming Performance
#
Select a game to compare FPS metrics
Hitman 3
Cyberpunk 2077 (1.0)
Immortals Fenyx Rising
Call of Duty: Black Ops Cold War
Assassin's Creed Valhalla
Watch Dogs: Legion
Mafia: Definitive Edition
FPS Benchmarks
This table showcases the average frame rate (FPS) achieved both GPUs in at various resolutions. Frame rate is a crucial indicator of how smoothly the GPU can run the game. A higher FPS generally translates to a smoother gameplay experience.
- Frames Per Second
Hitman 3 | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| Low - 720p | 353 FPS | -- |
| Medium - 1080p | 283 FPS | -- |
| High - 1080p | 280 FPS | -- |
| Ultra - 1080p | 273 FPS | -- |
| QHD - 1440p | 213 FPS | -- |
| 4K UHD - 2160p | 128 FPS | -- |
FPS Source: Notebookcheck
Compare Frames Per Second (FPS)
The average frame rate (FPS) in can be compared to similar GPUs to assess relative performance. Generally, higher FPS results in a smoother gameplay experience.
Choose Baseline GPU:Radeon RX 6900 XT orRadeon HD 6450
| GPU | Frames Per Second | |
|---|---|---|
| Radeon RX 6900 XT | 128 | |
| GeForce RTX 3080 Ti | 119.6 | -7% |
| GeForce RTX 3090 | 119 | -7% |
| GeForce RTX 3080 | 109 | -15% |
| GeForce RTX 2080 Ti | 85.2 | -33% |
| GeForce RTX 3070 | 77.5 | -39% |
| GeForce RTX 2080 | 65.3 | -49% |
| GeForce RTX 2080 SUPER | 64 | -50% |
| Radeon RX 6600 XT | 57 | -55% |
Compare Cost Per Frame
The average cost per frame in can be compared to similar GPUs to assess relative value. Generally, a lower cost per frame implies better value for your money.
Choose Baseline GPU:Radeon RX 6900 XT orRadeon HD 6450
| GPU | Cost Per Frame | |
|---|---|---|
| GeForce RTX 3080 | 6.41 | -18% |
| GeForce RTX 3070 | 6.44 | -18% |
| Radeon RX 6600 XT | 6.65 | -15% |
| Radeon RX 6900 XT | 7.8 | |
| GeForce RTX 3080 Ti | 10.03 | +28% |
| GeForce RTX 2080 | 10.7 | +37% |
| GeForce RTX 2080 SUPER | 10.92 | +40% |
| GeForce RTX 2080 Ti | 11.73 | +50% |
| GeForce RTX 3090 | 12.6 | +61% |
Benchmark Performance
#
Performance
Radeon RX 6900 XT9,389% better
59,11957% of 104,598
Radeon HD 6450
6231% of 104,598
The Radeon RX 6900 XT has 9,389% better performance than the Radeon HD 6450 for the 3DMark 11 Performance GPU benchmark.
The Radeon RX 6900 XT is ranked 18th with a score of 59,119, and the Radeon HD 6450 is ranked 500th with a score of 623.
Performance per dollar
Radeon RX 6900 XT422% better
59.1837% of 161.45
Radeon HD 6450
11.337% of 161.45
The Radeon RX 6900 XT has 422% better value for the money than the Radeon HD 6450 for the 3DMark 11 Performance GPU benchmark.
The Radeon RX 6900 XT is ranked 55th with a performance per dollar of 59.18, and the Radeon HD 6450 is ranked 96th with a performance per dollar of 11.33.
Relative Performance
The average score in the benchmark test can be compared to similar GPUs to assess relative performance. Generally, powerful GPUs tend to have higher scores.
Choose Baseline GPU:Radeon RX 6900 XT or
| GPU | Benchmark Performance | |
|---|---|---|
| GeForce RTX 3080 Ti | 60,980 | +3% |
| GeForce RTX 4070 | 59,969 | +1% |
| Radeon RX 6900 XT | 59,119 | |
| Radeon RX 7700 XT | 57,340 | -3% |
| GeForce RTX 3080 (12 GB) | 56,634 | -4% |
| Radeon HD 6870 | 4,218 | -93% |
| Radeon HD 7770 (GHz Edition) | 3,098 | -95% |
| Radeon HD 6450 | 623 | -99% |
Relative Value For Money
The average performance per dollar in the benchmark test can be compared to similar GPUs to assess relative value. A higher score implies a better value for your money.
Choose Baseline GPU:Radeon RX 6900 XT or
| GPU | Performance Per Dollar | |
|---|---|---|
| Radeon RX 6950 XT | 65.72 | +11% |
| GeForce RTX 4090 | 65.41 | +11% |
| Radeon RX 6900 XT | 59.18 | |
| GeForce RTX 2080 SUPER | 58.6 | -1% |
| GeForce RTX 2080 | 57.62 | -3% |
| GeForce GTX 590 | 13.11 | -78% |
| GeForce GTX 470 | 12.44 | -79% |
| Radeon HD 6450 | 11.33 | -81% |
| GeForce GTX 480 | 10.05 | -83% |
Benchmark Scores
This table showcases the average performance scores achieved by both GPUs across industry-standard benchmark tests. These scores provide a valuable insight into overall performance. Powerful GPUs tend to have higher scores.
- Popular
| Benchmark | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| 3DMark Time Spy Graphics | 18,210 | -- |
| 3DMark Time Spy Score | 17,549 | -- |
| 3DMark Cloud Gate Graphics | -- | 4,257 |
| 3DMark Fire Strike Standard Graphics | 50,587 (+10,802.37%) | 464 |
| 3DMark Night Raid Graphics | 160,895 | -- |
| 3DMark 11 Performance Score | 42,418 (+5,742.7%) | 726 |
| Cinebench R15 OpenGL 64 Bit | -- | 18.8 |
| PassMark G3D Mark | 26,809 (+13,508.63%) | 197 |
| PassMark G2D Mark | 1,058 (+781.67%) | 120 |
Benchmarks Source: Notebookcheck
Technical Specs
#
Graphics Processor
General information about the graphics processing unit like their architecture, manufacturing process size, and transistor count. Newer GPU architectures generally bring efficiency improvements and may introduce technologies that enhance graphical capabilities.
| Spec | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| Codename | Navi 21 | Caicos |
| Architecture | RDNA 2.0 | TeraScale 2 |
| Process Size | 7 nm | 40 nm |
| Transistors | 26,800 million | 370 million |
Memory Details
Memory specifications like their capacity, bandwidth, and clock speeds. GPU memory stores graphics data like frames, textures, and shadows which helps display rendered images. These specs are crucial for graphics-intense applications like gaming and 3D modeling.
| Spec | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| Memory Size | 16 GB | 512 MB |
| Memory Type | GDDR6 | DDR3, GDDR5 |
| Memory Bandwidth | 512 Gb/s | 8 Gb/s |
| Memory Clock | 2,000 MHz | 500 MHz |
| Memory Interface | 256 bit | 64 bit |
| L1 Cache | 128 KB | 8 KB |
| L2 Cache | 4 MB | 128 KB |
Board Compatibility
Compatibility information like their slot size, bus interface, power consumption, and display support. These specs are useful for verifying compatibility with your motherboard, power supply, and monitor.
| Spec | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| Slots | 3 slots | 1 slot |
| Bus Interface | PCIe 4.0 x16 | PCIe 2.0 x16 |
| Thermal Design Power (TDP) | 300 W | 18 W |
| Suggested PSU | 700 W | 200 W |
| Power Connectors | 2x 8-pin | -- |
| Outputs | HDMI 2.1, DisplayPort 1.4a, USB Type-C | DVI, HDMI 1.3a, VGA |
Cores & Clock Speeds
Processing power information like its cores and clock speed. These specs impact how fast they can process graphics. Each type of core or component serves a specific computational purpose.
| Spec | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| Stream Processors (SP) | 5,120 | 160 |
| Compute Units (CU) | 80 | 2 |
| Texture Mapping Units (TMU) | 320 | 8 |
| Render Output Units (ROP) | 128 | 4 |
| Ray Accelerators | 80 | -- |
| Core Clock Speed | 1,825 MHz | 625 MHz |
| Core Clock Speed (Boost) | 2,250 MHz | -- |
| Core Clock Speed (Game) | 2,015 MHz | -- |
Theoretical Performance
Theoretical performance numbers derived from the raw specifications of the different components like core count and clock speeds. While these provide a glimpse into peak processing power, they do not represent real-world performance.
| Spec | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| Pixel Fill Rate | 288 GPixel/s | 2.5 GPixel/s |
| Texture Fill Rate | 720 GTexel/s | 5 GTexel/s |
| FP32 Performance | 23.04 TFLOPS | 200 GFLOPS |
| FP64 Performance | 1,440 GFLOPS | -- |
API Support
Graphics API versions supported by these graphics cards. APIs evolve over time, introducing new features and functionalities. Older GPUs may not support recent versions.
| Spec | Radeon RX 6900 XT | Radeon HD 6450 |
|---|---|---|
| DirectX | 12 Ultimate (12_2) | 11.2 (11_0) |
| OpenCL | 2.1 | 1.2 |
| OpenGL | 4.6 | 4.4 |
| Shader Model | 6.8 | 5.0 |
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* Performance rating, performance per dollar, and rankings are based on the 3DMark 11 Performance GPU benchmark and MSRP.