GeForce RTX 4090 D vs Tesla K20c

Place in the ranking	486	2
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.35	17.65
Power efficiency	2.75	15.34
Architecture	Kepler (2012−2018)	Ada Lovelace (2022−2024)
GPU code name	GK110	AD102
Market segment	Workstation	Desktop
Release date	12 November 2012 (12 years ago)	28 December 2023 (less than a year ago)
Launch price (MSRP)	$3,199	$1,599

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RTX 4090 D has 4943% better value for money than Tesla K20c.

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	14592
Core clock speed	706 MHz	2280 MHz
Boost clock speed	no data	2520 MHz
Number of transistors	7,080 million	76,300 million
Manufacturing process technology	28 nm	5 nm
Power consumption (TDP)	225 Watt	425 Watt
Texture fill rate	146.8	1,149
Floating-point processing power	3.524 TFLOPS	73.54 TFLOPS
ROPs	40	176
TMUs	208	456
Tensor Cores	no data	456
Ray Tracing Cores	no data	114

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	PCIe 4.0 x16
Length	267 mm	304 mm
Width	2-slot	3-slot
Supplementary power connectors	1x 6-pin + 1x 8-pin	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	GDDR5	GDDR6X
Maximum RAM amount	5 GB	24 GB
Memory bus width	320 Bit	384 Bit
Memory clock speed	1300 MHz	1313 MHz
Memory bandwidth	208.0 GB/s	1,008 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 Connectors	No outputs	1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI	-	+

API compatibility

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

DirectX	12 (11_0)	12 Ultimate (12_2)
Shader Model	5.1	6.7
OpenGL	4.6	4.6
OpenCL	1.2	3.0
Vulkan	1.1.126	1.3
CUDA	3.5	8.9

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	8.90	93.82
Recency	12 November 2012	28 December 2023
Maximum RAM amount	5 GB	24 GB
Chip lithography	28 nm	5 nm
Power consumption (TDP)	225 Watt	425 Watt

Tesla K20c has 88.9% lower power consumption.

RTX 4090 D, on the other hand, has a 954.2% higher aggregate performance score, an age advantage of 11 years, a 380% higher maximum VRAM amount, and a 460% more advanced lithography process.

The GeForce RTX 4090 D is our recommended choice as it beats the Tesla K20c in performance tests.

Be aware that Tesla K20c is a workstation graphics card while GeForce RTX 4090 D is a desktop one.

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