RTX 3090 vs RTX A2000

AmperevsAmpereUpdated 36 days ago

The RTX 3090 emerges as the superior choice for most machine learning use cases, driven by its 35.6 TFLOPS compute, 24 GB VRAM, and 936 GB/s bandwidth that outperform the RTX A2000's 8 TFLOPS, 6-12 GB, and 288 GB/s. Despite higher average pricing of $0.41 per hour versus $0.23, the RTX 3090 delivers faster training and inference, justifying selection for production workloads.

RTX 3090 from $0.20/hrRTX A2000 from $0.50/hr

Specifications Compared

SpecRTX-3090RTX-A2000
TDP350W70W
VRAM24 GB6-12 GB
CUDA Cores10,4963,328
Memory TypeGDDR6XGDDR6
ArchitectureAmpereAmpere
Form FactorsPCIePCIe
InterconnectNVLink
Tensor Cores328104
FP16 Performance35.6 TFLOPS8 TFLOPS
FP32 Performance35.6 TFLOPS8 TFLOPS
Memory Bandwidth936 GB/s288 GB/s

Performance Analysis

Compute capabilities define the core performance gap: the RTX 3090 achieves 35.6 TFLOPS in FP16 and FP32, enabling four times faster processing than the RTX A2000's 8 TFLOPS in both formats. For deep learning training, this translates to quicker iterations on large datasets, as FP32 handles gradient computations and FP16 accelerates mixed-precision workflows. Inference benefits similarly, with the RTX 3090 supporting higher throughput for real-time applications.

Memory specifications further impact usability. The RTX 3090's 24 GB GDDR6X and 936 GB/s bandwidth accommodate massive batch sizes and complex models without swapping, reducing latency in training loops. In contrast, the RTX A2000's 6-12 GB GDDR6 at 288 GB/s limits it to smaller batches, potentially slowing workflows on VRAM-intensive tasks like fine-tuning large language models. Power draw underscores efficiency: the RTX 3090's 350W TDP demands robust cooling, while the RTX A2000's 70W suits edge deployments.

These specs influence real-world scaling. Multi-GPU setups favor the RTX 3090 via NVLink, enhancing data transfer over the RTX A2000's standalone PCIe.

Live Cloud Pricing

Real-time prices from 25+ providers. Updated every 60 seconds.

RTX 3090

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
TensorDock
TensorDock
NVIDIA GeForce RTX 3090
24GB VRAM
$0.20/GPU/hr
Available
TensorDock
TensorDock
NVIDIA GeForce RTX 3090
24GB VRAM
$0.21/GPU/hr
Available
Vast.ai
Vast.ai
4×NVIDIA GeForce RTX 3090
24GB VRAM
$0.25/GPU/hr
$1.01/hr total (4×)
Available
Vast.ai
Vast.ai
4×NVIDIA GeForce RTX 3090
24GB VRAM
$0.27/GPU/hr
$1.07/hr total (4×)
Available
LeaderGPU
LeaderGPU
8×NVIDIA GeForce RTX 3090
24GB VRAM
$0.29/GPU/hr
$2.29/hr total (8×)
Available

RTX A2000

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
RunPod
RunPod
NVIDIA RTX A2000
12GB VRAM
$0.50/GPU/hr

Compare real-time pricing across 25+ providers

When to Choose the RTX 3090

The RTX 3090 excels in VRAM-heavy workloads such as training large language models, where its 24 GB GDDR6X handles models exceeding 12 GB without fragmentation. High bandwidth of 936 GB/s supports large batch sizes, accelerating convergence in scientific computing or Stable Diffusion generation. At $0.08 per hour starting price across 53 offers, it provides value for compute-intensive sessions exceeding hours.

When to Choose the RTX A2000

The RTX A2000 fits low-power inference scenarios, drawing only 70W to minimize cloud costs in always-on deployments. Its 6-12 GB GDDR6 suffices for fine-tuning smaller models or lightweight LLM inference, with 8 TFLOPS enabling efficient single-user tasks. Starting at $0.06 per hour across 3 offers, it offers the lowest entry cost for prototyping.

Use Cases

LLM Training
RTX 3090

The RTX 3090's 24 GB VRAM and 35.6 TFLOPS FP16 handle large models and batches effectively. The RTX A2000's 6-12 GB limits scalability.

LLM Inference
RTX 3090

High 936 GB/s bandwidth on RTX 3090 supports high-throughput serving. RTX A2000 suits only small-scale inference due to 288 GB/s.

Fine-tuning
Either

RTX 3090 accelerates with 35.6 TFLOPS for complex adapters; RTX A2000's 70W and 6-12 GB work for smaller models.

Stable Diffusion
RTX 3090

RTX 3090's 24 GB VRAM enables high-resolution generations without OOM errors. RTX A2000 struggles with larger prompts.

Scientific Computing
RTX 3090

35.6 TFLOPS FP32 on RTX 3090 speeds simulations; NVLink aids multi-GPU scaling absent on RTX A2000.

Frequently Asked Questions

What is the VRAM difference between RTX 3090 and RTX A2000?

The RTX 3090 provides 24 GB GDDR6X, while the RTX A2000 offers 6-12 GB GDDR6. This makes the RTX 3090 better for memory-intensive AI tasks.

How do their compute performances compare?

RTX 3090 delivers 35.6 TFLOPS in FP16 and FP32, versus RTX A2000's 8 TFLOPS in each. The gap favors RTX 3090 for training and inference.

What are the cloud rental prices?

RTX 3090 starts at $0.08 per hour, averaging $0.41 across 53 offers. RTX A2000 starts at $0.06 per hour, averaging $0.23 across 3 offers.

Which has higher power consumption?

RTX 3090 requires 350W TDP, compared to RTX A2000's 70W. This affects suitability for dense cloud instances.

Do they support multi-GPU setups?

RTX 3090 includes NVLink for interconnect, enhancing scaling. RTX A2000 relies solely on PCIe without specified interconnect.

When is RTX A2000 more cost-effective?

RTX A2000 shines in low-utilization inference at $0.06 per hour start. Its 70W efficiency reduces long-run costs versus RTX 3090's 350W.

Which is cheaper to rent, the RTX 3090 or the RTX A2000?

Cloud rental prices for both the RTX 3090 and RTX A2000 vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.

How much VRAM does the RTX 3090 have compared to the RTX A2000?

The RTX 3090 has 24 GB of GDDR6X memory. The RTX A2000 has 6 to 12 GB of GDDR6 memory.

Can I find RTX 3090 and RTX A2000 GPUs available to rent right now?

Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.

What is the main difference between the RTX 3090 and the RTX A2000?

The RTX 3090 uses the Ampere architecture (2020) while the RTX A2000 uses Ampere (2021). The RTX 3090 delivers 4.5x the FP16 throughput and 3.3x the memory bandwidth of the RTX A2000.

RTX 3090 vs RTX A2000: 4.5x FP16 Gap, 24GB vs 12GB | GPUPerHour