RTX PRO 4000 Blackwell vs Iris Plus Graphics 645
Aggregate performance score
We've compared Iris Plus Graphics 645 with RTX PRO 4000 Blackwell, including specs and performance data.
RTX PRO 4000 Blackwell outperforms Iris Plus Graphics 645 by a whopping 1964% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 703 | 5 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 20.92 | no data |
| Architecture | Generation 9.5 (2016−2020) | Blackwell 2.0 (2025) |
| GPU code name | Coffee Lake GT3e | GB203 |
| Market segment | Laptop | Workstation |
| Release date | 7 October 2019 (5 years ago) | 18 March 2025 (less than a year 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 | 384 | 8960 |
| Core clock speed | 300 MHz | 1590 MHz |
| Boost clock speed | 1050 MHz | 2617 MHz |
| Number of transistors | no data | 45,600 million |
| Manufacturing process technology | 14 nm+++ | 5 nm |
| Power consumption (TDP) | 15 Watt | 140 Watt |
| Texture fill rate | 50.40 | 732.8 |
| Floating-point processing power | 0.8064 TFLOPS | 46.9 TFLOPS |
| ROPs | 6 | 96 |
| TMUs | 48 | 280 |
| Tensor Cores | no data | 280 |
| Ray Tracing Cores | no data | 70 |
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 | Ring Bus | PCIe 5.0 x16 |
| Length | no data | 241 mm |
| Width | no data | 1-slot |
| Supplementary power connectors | no data | 1x 16-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 | System Shared | GDDR7 |
| Maximum RAM amount | System Shared | 24 GB |
| Memory bus width | System Shared | 192 Bit |
| Memory clock speed | System Shared | 1750 MHz |
| Memory bandwidth | no data | 672.0 GB/s |
| Shared memory | + | - |
| Resizable BAR | - | + |
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 | Portable Device Dependent | 4x DisplayPort 2.1b |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Quick Sync | + | no data |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_1) | 12 Ultimate (12_2) |
| Shader Model | 6.4 | 6.8 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.3 | 1.4 |
| CUDA | - | 12.0 |
| DLSS | - | + |
Synthetic benchmark performance
Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark score.
Passmark
This is the most ubiquitous GPU benchmark. 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.
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:
| Full HD | 26
−1823%
| 500−550
+1823%
|
FPS performance in popular games
Full HD
Low Preset
| Counter-Strike 2 | 16−18
−1959%
|
350−400
+1959%
|
| Cyberpunk 2077 | 8−9
−1900%
|
160−170
+1900%
|
| Dead Island 2 | 12−14
−1900%
|
240−250
+1900%
|
Full HD
Medium Preset
| Battlefield 5 | 16−18
−1959%
|
350−400
+1959%
|
| Counter-Strike 2 | 16−18
−1959%
|
350−400
+1959%
|
| Cyberpunk 2077 | 8−9
−1900%
|
160−170
+1900%
|
| Dead Island 2 | 12−14
−1900%
|
240−250
+1900%
|
| Far Cry 5 | 12−14
−1900%
|
240−250
+1900%
|
| Fortnite | 24−27
−1900%
|
500−550
+1900%
|
| Forza Horizon 4 | 20−22
−1900%
|
400−450
+1900%
|
| Forza Horizon 5 | 10−12
−1900%
|
220−230
+1900%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 16−18
−1959%
|
350−400
+1959%
|
| Valorant | 55−60
−1900%
|
1100−1150
+1900%
|
Full HD
High Preset
| Battlefield 5 | 16−18
−1959%
|
350−400
+1959%
|
| Counter-Strike 2 | 16−18
−1959%
|
350−400
+1959%
|
| Counter-Strike: Global Offensive | 75−80
−1900%
|
1500−1550
+1900%
|
| Cyberpunk 2077 | 8−9
−1900%
|
160−170
+1900%
|
| Dead Island 2 | 12−14
−1900%
|
240−250
+1900%
|
| Dota 2 | 29
−1797%
|
550−600
+1797%
|
| Far Cry 5 | 12−14
−1900%
|
240−250
+1900%
|
| Fortnite | 24−27
−1900%
|
500−550
+1900%
|
| Forza Horizon 4 | 20−22
−1900%
|
400−450
+1900%
|
| Forza Horizon 5 | 10−12
−1900%
|
220−230
+1900%
|
| Grand Theft Auto V | 14−16
−1900%
|
280−290
+1900%
|
| Metro Exodus | 8−9
−1900%
|
160−170
+1900%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 16−18
−1959%
|
350−400
+1959%
|
| The Witcher 3: Wild Hunt | 12−14
−1900%
|
240−250
+1900%
|
| Valorant | 55−60
−1900%
|
1100−1150
+1900%
|
Full HD
Ultra Preset
| Battlefield 5 | 16−18
−1959%
|
350−400
+1959%
|
| Cyberpunk 2077 | 8−9
−1900%
|
160−170
+1900%
|
| Dead Island 2 | 12−14
−1900%
|
240−250
+1900%
|
| Dota 2 | 27
−1937%
|
550−600
+1937%
|
| Far Cry 5 | 12−14
−1900%
|
240−250
+1900%
|
| Forza Horizon 4 | 20−22
−1900%
|
400−450
+1900%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 16−18
−1959%
|
350−400
+1959%
|
| The Witcher 3: Wild Hunt | 12−14
−1900%
|
240−250
+1900%
|
| Valorant | 55−60
−1900%
|
1100−1150
+1900%
|
Full HD
Epic Preset
| Fortnite | 24−27
−1900%
|
500−550
+1900%
|
1440p
High Preset
| Counter-Strike 2 | 7−8
−1900%
|
140−150
+1900%
|
| Counter-Strike: Global Offensive | 30−35
−1931%
|
650−700
+1931%
|
| Grand Theft Auto V | 4−5
−1900%
|
80−85
+1900%
|
| Metro Exodus | 3−4
−1900%
|
60−65
+1900%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 30−35
−1870%
|
650−700
+1870%
|
| Valorant | 45−50
−1857%
|
900−950
+1857%
|
1440p
Ultra Preset
| Battlefield 5 | 2−3
−1900%
|
40−45
+1900%
|
| Cyberpunk 2077 | 3−4
−1900%
|
60−65
+1900%
|
| Dead Island 2 | 8−9
−1900%
|
160−170
+1900%
|
| Far Cry 5 | 7−8
−1900%
|
140−150
+1900%
|
| Forza Horizon 4 | 10−11
−1900%
|
200−210
+1900%
|
| The Witcher 3: Wild Hunt | 5−6
−1900%
|
100−105
+1900%
|
1440p
Epic Preset
| Fortnite | 8−9
−1900%
|
160−170
+1900%
|
4K
High Preset
| Dead Island 2 | 6−7
−1900%
|
120−130
+1900%
|
| Grand Theft Auto V | 16−18
−1959%
|
350−400
+1959%
|
| Valorant | 21−24
−1805%
|
400−450
+1805%
|
4K
Ultra Preset
| Battlefield 5 | 0−1 | 0−1 |
| Cyberpunk 2077 | 1−2
−1700%
|
18−20
+1700%
|
| Dead Island 2 | 6−7
−1900%
|
120−130
+1900%
|
| Dota 2 | 14−16
−1900%
|
280−290
+1900%
|
| Far Cry 5 | 3−4
−1900%
|
60−65
+1900%
|
| Forza Horizon 4 | 5−6
−1900%
|
100−105
+1900%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 5−6
−1900%
|
100−105
+1900%
|
4K
Epic Preset
| Fortnite | 5−6
−1900%
|
100−105
+1900%
|
This is how Iris Plus Graphics 645 and RTX PRO 4000 Blackwell compete in popular games:
- RTX PRO 4000 Blackwell is 1823% faster in 1080p
Pros & cons summary
| Performance score | 4.18 | 86.27 |
| Recency | 7 October 2019 | 18 March 2025 |
| Chip lithography | 14 nm | 5 nm |
| Power consumption (TDP) | 15 Watt | 140 Watt |
Iris Plus Graphics 645 has 833.3% lower power consumption.
RTX PRO 4000 Blackwell, on the other hand, has a 1963.9% higher aggregate performance score, an age advantage of 5 years, and a 180% more advanced lithography process.
The RTX PRO 4000 Blackwell is our recommended choice as it beats the Iris Plus Graphics 645 in performance tests.
Be aware that Iris Plus Graphics 645 is a notebook graphics card while RTX PRO 4000 Blackwell is a workstation one.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
