
The RTX 4090 is a beast of a card when used for rendering and the RTX 4080 sits in between, above the RTX 3080 Ti.
Next, we move on to AIDA64 GPGPU benchmarks.
AIDA64
AIDA64 is an important industry tool for benchmarkers. Its GPGPU benchmarks measure performance and give scores to compare against other popular video cards.
AIDA64’s benchmark code methods are written in Assembly language, and they are well-optimized for every popular AMD, Intel, NVIDIA and VIA processor by utilizing the appropriate instruction set extensions. We use the Engineer’s full version of AIDA64 courtesy of FinalWire. AIDA64 is free to to try and use for 30 days.
Here is the chart summary of the AIDA64 GPGPU benchmarks with the RTX 4090, the RTX 4080, the RTX 3080 Ti, and the RX 6900 XT side-by-side.

Generally the RTX 4090 is faster at almost all of AIDA64’s GPGPU benchmarks than the other cards with the RTX 4080 in second place. So let’s look at Sandra 2020 next.
To see where the CPU, GPU, and motherboard performance results differ, there is no better tool than SiSoft’s Sandra 2020. SiSoftware SANDRA (the System ANalyser, Diagnostic and Reporting Assistant) is a excellent information & diagnostic utility in a complete package. It is able to provide all the information about your hardware, software, and other devices for diagnosis and for benchmarking. Sandra is derived from a Greek name that implies “defender” or “helper”.
There are several versions of Sandra, including a free version of Sandra Lite that anyone can download and use. 20/21-R16a is the latest version, and we are using the full engineer suite courtesy of SiSoft. Sandra 2020 features continuous multiple monthly incremental improvements over earlier versions of Sandra. It will benchmark and analyze all of the important PC subsystems and even rank your PC while giving recommendations for improvement.
With the above in mind, we ran Sandra’s intensive GPGPU benchmarks and charted the results summarizing them. The performance results of the RTX 4080 and RTX 4090 are compared with the performance results of the RTX 3080 Ti, and the RX 6900 XT.

Second only to the RTX 4090, the RTX 4080 is faster than the RTX 3080 Ti and it distinguishes itself in every area – Processing, Cryptography, Financial and Scientific Analysis, Image Processing, and Bandwidth.
Next up, SPEC benchmarks beginning with SPECviewperfect GPU benches.
SPECviewperf 2020 GPU Benches
The SPEC Graphics Performance Characterization Group (SPECgpc) has released a 2020-22 version of its SPECviewperf benchmark that features updated viewsets, new models, support for up to 4K display resolutions, and improved set-up and results management. We use the highest available 3800×2120 display resolution for high end cards.
Here are SPECviewperf 2020 GPU RTX 4080 benchmarks summarized in a chart together with our four competing cards.
Although we see three architectures with different strengths and weaknesses, the RTX 4090 is a beast in SPEC benchmarks followed by the RTX 4080 in a solid second place.
SPECworkstation3.1 Benchmarks
All the SPECworkstation 3 benchmarks are based on professional applications, most of which are in the CAD/CAM or media and entertainment fields. All of these benchmarks are free except for vendors of computer-related products and/or services.
The most comprehensive workstation benchmark is SPECworkstation 3. It’s a free-standing benchmark which does not require ancillary software. It measures GPU, CPU, storage and all other major aspects of workstation performance based on actual applications and representative workloads. We only tested the GPU-related workstation performance as checked in the image above.
Below are the SPECworkstation 3.1 RTX 4080 results summarized in a chart. Higher is better since we are comparing scores.
