Iris Plus Graphics 645 vs Tesla K20c
Aggregate performance score
We've compared Tesla K20c with Iris Plus Graphics 645, including specs and performance data.
K20c outperforms Plus Graphics 645 by an impressive 97% 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 | 545 | 715 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.15 | no data |
| Power efficiency | 2.80 | 21.35 |
| Architecture | Kepler (2012−2018) | Generation 9.5 (2016−2020) |
| GPU code name | GK110 | Coffee Lake GT3e |
| Market segment | Workstation | Laptop |
| Release date | 12 November 2012 (12 years ago) | 7 October 2019 (6 years ago) |
| Launch price (MSRP) | $3,199 | no data |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
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 | 2496 | 384 |
| Core clock speed | 706 MHz | 300 MHz |
| Boost clock speed | no data | 1050 MHz |
| Number of transistors | 7,080 million | no data |
| Manufacturing process technology | 28 nm | 14 nm+++ |
| Power consumption (TDP) | 225 Watt | 15 Watt |
| Texture fill rate | 146.8 | 50.40 |
| Floating-point processing power | 3.524 TFLOPS | 0.8064 TFLOPS |
| ROPs | 40 | 6 |
| TMUs | 208 | 48 |
| L1 Cache | 208 KB | no data |
| L2 Cache | 1280 KB | no data |
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 2.0 x16 | Ring Bus |
| Length | 267 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x 6-pin + 1x 8-pin | no 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 type | GDDR5 | System Shared |
| Maximum RAM amount | 5 GB | System Shared |
| Memory bus width | 320 Bit | System Shared |
| Memory clock speed | 1300 MHz | System Shared |
| Memory bandwidth | 208.0 GB/s | no data |
| Shared memory | - | + |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | No outputs | Portable Device Dependent |
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 support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (12_1) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | 3.5 | - |
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 | 50−55
+92.3%
| 26
−92.3%
|
Cost per frame, $
| 1080p | 63.98 | no data |
FPS performance in popular games
Full HD
Low
| Counter-Strike 2 | 18−20
+0%
|
18−20
+0%
|
| Cyberpunk 2077 | 9−10
+0%
|
9−10
+0%
|
| Hogwarts Legacy | 9−10
+0%
|
9−10
+0%
|
Full HD
Medium
| Battlefield 5 | 16−18
+0%
|
16−18
+0%
|
| Counter-Strike 2 | 18−20
+0%
|
18−20
+0%
|
| Cyberpunk 2077 | 9−10
+0%
|
9−10
+0%
|
| Far Cry 5 | 12−14
+0%
|
12−14
+0%
|
| Fortnite | 24−27
+0%
|
24−27
+0%
|
| Forza Horizon 4 | 20−22
+0%
|
20−22
+0%
|
| Forza Horizon 5 | 10−12
+0%
|
10−12
+0%
|
| Hogwarts Legacy | 9−10
+0%
|
9−10
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 16−18
+0%
|
16−18
+0%
|
| Valorant | 55−60
+0%
|
55−60
+0%
|
Full HD
High
| Battlefield 5 | 16−18
+0%
|
16−18
+0%
|
| Counter-Strike 2 | 18−20
+0%
|
18−20
+0%
|
| Counter-Strike: Global Offensive | 75−80
+0%
|
75−80
+0%
|
| Cyberpunk 2077 | 9−10
+0%
|
9−10
+0%
|
| Dota 2 | 29
+0%
|
29
+0%
|
| Far Cry 5 | 12−14
+0%
|
12−14
+0%
|
| Fortnite | 24−27
+0%
|
24−27
+0%
|
| Forza Horizon 4 | 20−22
+0%
|
20−22
+0%
|
| Forza Horizon 5 | 10−12
+0%
|
10−12
+0%
|
| Grand Theft Auto V | 14−16
+0%
|
14−16
+0%
|
| Hogwarts Legacy | 9−10
+0%
|
9−10
+0%
|
| Metro Exodus | 8−9
+0%
|
8−9
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 16−18
+0%
|
16−18
+0%
|
| The Witcher 3: Wild Hunt | 12−14
+0%
|
12−14
+0%
|
| Valorant | 55−60
+0%
|
55−60
+0%
|
Full HD
Ultra
| Battlefield 5 | 16−18
+0%
|
16−18
+0%
|
| Cyberpunk 2077 | 9−10
+0%
|
9−10
+0%
|
| Dota 2 | 27
+0%
|
27
+0%
|
| Far Cry 5 | 12−14
+0%
|
12−14
+0%
|
| Forza Horizon 4 | 20−22
+0%
|
20−22
+0%
|
| Hogwarts Legacy | 9−10
+0%
|
9−10
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 16−18
+0%
|
16−18
+0%
|
| The Witcher 3: Wild Hunt | 12−14
+0%
|
12−14
+0%
|
| Valorant | 55−60
+0%
|
55−60
+0%
|
Full HD
Epic
| Fortnite | 24−27
+0%
|
24−27
+0%
|
1440p
High
| Counter-Strike 2 | 8−9
+0%
|
8−9
+0%
|
| Counter-Strike: Global Offensive | 30−35
+0%
|
30−35
+0%
|
| Grand Theft Auto V | 4−5
+0%
|
4−5
+0%
|
| Metro Exodus | 3−4
+0%
|
3−4
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 30−35
+0%
|
30−35
+0%
|
| Valorant | 45−50
+0%
|
45−50
+0%
|
1440p
Ultra
| Battlefield 5 | 2−3
+0%
|
2−3
+0%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
| Far Cry 5 | 8−9
+0%
|
8−9
+0%
|
| Forza Horizon 4 | 10−11
+0%
|
10−11
+0%
|
| Hogwarts Legacy | 4−5
+0%
|
4−5
+0%
|
| The Witcher 3: Wild Hunt | 6−7
+0%
|
6−7
+0%
|
1440p
Epic
| Fortnite | 8−9
+0%
|
8−9
+0%
|
4K
High
| Grand Theft Auto V | 16−18
+0%
|
16−18
+0%
|
| Valorant | 21−24
+0%
|
21−24
+0%
|
4K
Ultra
| Battlefield 5 | 0−1 | 0−1 |
| Cyberpunk 2077 | 1−2
+0%
|
1−2
+0%
|
| Dota 2 | 14−16
+0%
|
14−16
+0%
|
| Far Cry 5 | 3−4
+0%
|
3−4
+0%
|
| Forza Horizon 4 | 5−6
+0%
|
5−6
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 5−6
+0%
|
5−6
+0%
|
4K
Epic
| Fortnite | 5−6
+0%
|
5−6
+0%
|
This is how Tesla K20c and Iris Plus Graphics 645 compete in popular games:
- Tesla K20c is 92% faster in 1080p
All in all, in popular games:
- there's a draw in 59 tests (100%)
Pros & cons summary
| Performance score | 7.80 | 3.96 |
| Recency | 12 November 2012 | 7 October 2019 |
| Chip lithography | 28 nm | 14 nm |
| Power consumption (TDP) | 225 Watt | 15 Watt |
Tesla K20c has a 97% higher aggregate performance score.
Iris Plus Graphics 645, on the other hand, has an age advantage of 6 years, a 100% more advanced lithography process, and 1400% lower power consumption.
The Tesla K20c is our recommended choice as it beats the Iris Plus Graphics 645 in performance tests.
Be aware that Tesla K20c is a workstation graphics card while Iris Plus Graphics 645 is a notebook one.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
