Radeon RX 6500 XT vs GeForce GT 645M
Aggregated performance score
Radeon RX 6500 XT outperforms GeForce GT 645M by a whopping 926% based on our aggregated benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 802 | 204 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.23 | 23.04 |
| Architecture | Kepler (2012−2018) | Navi / RDNA2 (2020−2022) |
| GPU code name | N13P-GS | Navi 24 |
| Market segment | Laptop | Desktop |
| Release date | 22 March 2012 (12 years ago) | 19 January 2022 (2 years ago) |
| Launch price (MSRP) | no data | $199 |
| Current price | $310 | $274 (1.4x MSRP) |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
RX 6500 XT has 9917% better value for money than GT 645M.
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 1024 |
| CUDA cores | 384 | no data |
| Core clock speed | Up to 710 MHz | 2610 MHz |
| Boost clock speed | no data | 2815 MHz |
| Number of transistors | 1,270 million | 5,400 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 32 Watt | 107 Watt |
| Texture fill rate | 22.7 billion/sec | 180.2 |
| Floating-point performance | 544.5 gflops | no data |
Form factor & compatibility
Information on GeForce GT 645M and Radeon RX 6500 XT compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
| Laptop size | medium sized | no data |
| Bus support | PCI Express 2.0, PCI Express 3.0 | no data |
| Interface | PCIe 3.0 x16 | PCIe 4.0 x4 |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | 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 | DDR3\GDDR5 | GDDR6 |
| Maximum RAM amount | 2 GB | 8 GB |
| Memory bus width | 128bit | 64 Bit |
| Memory clock speed | 1800 MHz | 18000 MHz |
| Memory bandwidth | Up to 64.0 GB/s | 143.9 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 | 1x HDMI 2.1, 1x DisplayPort 1.4a |
| HDMI | + | + |
| HDCP | + | no data |
| Maximum VGA resolution | Up to 2048x1536 | no data |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Blu-Ray | + | no data |
| Optimus | + | no data |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 API | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.6 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.1 | 2.2 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | + | no data |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Radeon RX 6500 XT outperforms GeForce GT 645M by 926% based on our aggregated benchmark results.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
Benchmark coverage: 25%
Radeon RX 6500 XT outperforms GeForce GT 645M by 926% in Passmark.
3DMark Vantage Performance
3DMark Vantage is an outdated DirectX 10 benchmark using 1280x1024 screen resolution. It taxes the graphics card with two scenes, one depicting a girl escaping some militarized base located within a sea cave, the other displaying a space fleet attack on a defenseless planet. It was discontinued in April 2017, and Time Spy benchmark is now recommended to be used instead.
Benchmark coverage: 17%
Radeon RX 6500 XT outperforms GeForce GT 645M by 939% in 3DMark Vantage Performance.
3DMark 11 Performance GPU
3DMark 11 is an obsolete DirectX 11 benchmark by Futuremark. It used four tests based on two scenes, one being few submarines exploring the submerged wreck of a sunken ship, the other is an abandoned temple deep in the jungle. All the tests are heavy with volumetric lighting and tessellation, and despite being done in 1280x720 resolution, are relatively taxing. Discontinued in January 2020, 3DMark 11 is now superseded by Time Spy.
Benchmark coverage: 17%
Radeon RX 6500 XT outperforms GeForce GT 645M by 1144% in 3DMark 11 Performance GPU.
3DMark Fire Strike Graphics
Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.
Benchmark coverage: 14%
Radeon RX 6500 XT outperforms GeForce GT 645M by 1264% in 3DMark Fire Strike Graphics.
3DMark Cloud Gate GPU
Cloud Gate is an outdated DirectX 11 feature level 10 benchmark that was used for home PCs and basic notebooks. It displays a few scenes of some weird space teleportation device launching spaceships into unknown, using fixed resolution of 1280x720. Just like Ice Storm benchmark, it has been discontinued in January 2020 and replaced by 3DMark Night Raid.
Benchmark coverage: 14%
Radeon RX 6500 XT outperforms GeForce GT 645M by 962% in 3DMark Cloud Gate GPU.
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Average FPS across all PC games
Here are the average frames per second in a large set of popular games across different resolutions:
| 900p | 30
−900%
| 300−350
+900%
|
| Full HD | 24
−171%
| 65
+171%
|
| 1440p | 2−3
−1400%
| 30
+1400%
|
| 4K | 1−2
−1500%
| 16
+1500%
|
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 5−6
−1340%
|
72
+1340%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 3−4
−1500%
|
45−50
+1500%
|
| Battlefield 5 | 4−5
−1900%
|
80−85
+1900%
|
| Call of Duty: Modern Warfare | 10−12
−491%
|
65−70
+491%
|
| Cyberpunk 2077 | 5−6
−980%
|
54
+980%
|
| Far Cry 5 | 3−4
−3300%
|
102
+3300%
|
| Far Cry New Dawn | 2−3
−4750%
|
97
+4750%
|
| Forza Horizon 4 | 5−6
−1540%
|
80−85
+1540%
|
| Hitman 3 | 4−5
−1750%
|
70−75
+1750%
|
| Horizon Zero Dawn | 3−4
−2433%
|
76
+2433%
|
| Red Dead Redemption 2 | 5−6
−700%
|
40−45
+700%
|
| Shadow of the Tomb Raider | 8−9
−963%
|
85
+963%
|
| Watch Dogs: Legion | 0−1 | 74 |
Full HD
High Preset
| Assassin's Creed Odyssey | 3−4
−1500%
|
45−50
+1500%
|
| Battlefield 5 | 4−5
−1900%
|
80−85
+1900%
|
| Call of Duty: Modern Warfare | 10−12
−491%
|
65−70
+491%
|
| Cyberpunk 2077 | 5−6
−580%
|
34
+580%
|
| Far Cry 5 | 3−4
−2967%
|
92
+2967%
|
| Far Cry New Dawn | 2−3
−4350%
|
89
+4350%
|
| Forza Horizon 4 | 5−6
−1540%
|
80−85
+1540%
|
| Hitman 3 | 4−5
−1750%
|
70−75
+1750%
|
| Horizon Zero Dawn | 3−4
−1833%
|
58
+1833%
|
| Metro Exodus | 3−4
−1633%
|
52
+1633%
|
| Red Dead Redemption 2 | 5−6
−700%
|
40−45
+700%
|
| Shadow of the Tomb Raider | 8−9
−713%
|
65
+713%
|
| The Witcher 3: Wild Hunt | 6−7
−1433%
|
92
+1433%
|
| Watch Dogs: Legion | 0−1 | 58 |
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 3−4
−1500%
|
45−50
+1500%
|
| Battlefield 5 | 4−5
−1900%
|
80−85
+1900%
|
| Cyberpunk 2077 | 5−6
−500%
|
30
+500%
|
| Far Cry 5 | 3−4
−2767%
|
86
+2767%
|
| Far Cry New Dawn | 2−3
−4000%
|
82
+4000%
|
| Forza Horizon 4 | 5−6
−1540%
|
80−85
+1540%
|
| The Witcher 3: Wild Hunt | 6−7
−800%
|
54
+800%
|
| Watch Dogs: Legion | 0−1 | 25 |
1440p
High Preset
| Call of Duty: Modern Warfare | 5−6
−660%
|
35−40
+660%
|
| Hitman 3 | 5−6
−720%
|
40−45
+720%
|
| Horizon Zero Dawn | 9−10
−367%
|
42
+367%
|
| Metro Exodus | 1−2
−1700%
|
18
+1700%
|
| Red Dead Redemption 2 | 1−2
−1800%
|
18−20
+1800%
|
| Shadow of the Tomb Raider | 6−7
−500%
|
36
+500%
|
1440p
Ultra Preset
| Cyberpunk 2077 | 1−2
−1600%
|
17
+1600%
|
| Far Cry 5 | 4−5
−1325%
|
57
+1325%
|
| The Witcher 3: Wild Hunt | 2−3
−1350%
|
27−30
+1350%
|
4K
High Preset
| Call of Duty: Modern Warfare | 2−3
−850%
|
18−20
+850%
|
| Hitman 3 | 2−3
−1050%
|
21−24
+1050%
|
| Horizon Zero Dawn | 7−8
−71.4%
|
12
+71.4%
|
| Red Dead Redemption 2 | 1−2
−1200%
|
12−14
+1200%
|
4K
Ultra Preset
| Assassin's Creed Odyssey | 1−2
−1400%
|
14−16
+1400%
|
| Assassin's Creed Valhalla | 1−2
−500%
|
6
+500%
|
| Far Cry 5 | 3−4
−667%
|
23
+667%
|
| Far Cry New Dawn | 6−7
−233%
|
20
+233%
|
This is how GT 645M and RX 6500 XT compete in popular games:
- RX 6500 XT is 900% faster in 900p
- RX 6500 XT is 171% faster in 1080p
- RX 6500 XT is 1400% faster in 1440p
- RX 6500 XT is 1500% faster in 4K
Here's the range of performance differences observed across popular games:
- in Far Cry New Dawn, with 1080p resolution and the Medium Preset, the RX 6500 XT is 4750% faster than the GT 645M.
All in all, in popular games:
- Without exception, RX 6500 XT surpassed GT 645M in all 49 of our tests.
Pros & cons summary
| Performance score | 2.40 | 24.62 |
| Recency | 22 March 2012 | 19 January 2022 |
| Maximum RAM amount | 2 GB | 8 GB |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 32 Watt | 107 Watt |
The Radeon RX 6500 XT is our recommended choice as it beats the GeForce GT 645M in performance tests.
Be aware that GeForce GT 645M is a notebook card while Radeon RX 6500 XT is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
