Calculate the TPS of the A800 PCIe 40 GB on local AI models
Every model in our catalogue assessed against this card at the context length and minimum quality you choose. Speed is an estimate for a single request, calculated from this card's memory bandwidth and the size of each model once compressed.
Calculated for this card
Largest model it holds
Qwen3-Coder-Next
80B · Q3_K_M · 124 tok/s
Fastest model
Gemma 3 QAT 1B
661 tok/s · 1B
What AI models can a A800 PCIe 40 GB run?
Set the inputs, read the answer
More context means more memory for the conversation cache. Speed is for a fresh conversation and does not change with this setting.
Hides models that would only fit by being compressed below this point.
573 models match
Calculating| Quantisation | Fit | ||||||
|---|---|---|---|---|---|---|---|
|
661
tok/s
562–793 |
Gemma 3 1B | 1B | Mar 2025 | 1.8 GB | 33k tokens | Q8_0 | Comfortable |
|
661
tok/s
562–793 |
Gemma 3 QAT 1B | 1B | Apr 2025 | 1.8 GB | 33k tokens | Q8_0 | Comfortable |
|
661
tok/s
396–1,057 · low confidence |
HGRN 1B (WT 103) ≈ | 1B | Nov 2023 | 1.8 GB | 131k tokens ? | Q8_0 | Comfortable |
|
661
tok/s
396–1,057 · low confidence |
LLama 3..2 Typhoon 2 1B ≈ | 1B | Dec 2024 | 1.8 GB | 131k tokens ? | Q8_0 | Comfortable |
|
661
tok/s
396–1,057 · low confidence |
OLMo-1B ≈ | 1B | Feb 2024 | 1.8 GB | 131k tokens ? | Q8_0 | Comfortable |
|
661
tok/s
396–1,057 · low confidence |
Pythia-1b ≈ | 1B | Apr 2023 | 1.8 GB | 131k tokens ? | Q8_0 | Comfortable |
|
612
tok/s
367–979 · low confidence |
OpenELM-1.1B ≈ | 1.1B | May 2024 | 1.9 GB | 131k tokens ? | Q8_0 | Comfortable |
|
601
tok/s
360–961 · low confidence |
DeciCoder-1B ≈ | 1.1B | Aug 2023 | 1.9 GB | 131k tokens ? | Q8_0 | Comfortable |
|
601
tok/s
360–961 · low confidence |
SantaCoder ≈ | 1.1B | Jan 2023 | 1.9 GB | 131k tokens ? | Q8_0 | Comfortable |
|
601
tok/s
360–961 · low confidence |
TinyLlama-1.1B (1T token checkpoint) ≈ | 1.1B | Oct 2023 | 1.9 GB | 131k tokens ? | Q8_0 | Comfortable |
|
601
tok/s
360–961 · low confidence |
TinyLlama-1.1B (3T token checkpoint) ≈ | 1.1B | Oct 2023 | 1.9 GB | 131k tokens ? | Q8_0 | Comfortable |
|
551
tok/s
330–881 · low confidence |
EXAONE 4.0 (1.2B) ≈ | 1.2B | Jul 2025 | 2.0 GB | 131k tokens ? | Q8_0 | Comfortable |
|
551
tok/s
330–881 · low confidence |
MinerU2.5 ≈ | 1.2B | Sep 2025 | 2.0 GB | 131k tokens ? | Q8_0 | Comfortable |
|
551
tok/s
330–881 · low confidence |
Pleias 1.0 1.2B ≈ | 1.2B | Dec 2024 | 2.0 GB | 131k tokens ? | Q8_0 | Comfortable |
|
551
tok/s
330–881 · low confidence |
Pleias-RAG-1B ≈ | 1.2B | Apr 2025 | 2.0 GB | 131k tokens ? | Q8_0 | Comfortable |
|
537
tok/s
457–645 |
Llama 3.2 1B | 1.2B | Sep 2024 | 2.2 GB | 131k tokens | Q8_0 | Comfortable |
|
530
tok/s
318–847 · low confidence |
MiniCPM-1.2B ≈ | 1.2B | Jun 2024 | 2.0 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
DeepSeek Coder 1.3B ≈ | 1.3B | Jan 2024 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
DeepSeek-VL-1.3B ≈ | 1.3B | Mar 2024 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
DigiRL ≈ | 1.3B | Jun 2024 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
GLA Transformer 1.3B ≈ | 1.3B | Aug 2024 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
Janus 1.3B ≈ | 1.3B | Oct 2024 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
Kosmos-2.5 ≈ | 1.3B | Aug 2024 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
Otter ≈ | 1.3B | May 2023 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
|
508
tok/s
305–813 · low confidence |
Phi-1 ≈ | 1.3B | Oct 2023 | 2.1 GB | 131k tokens ? | Q8_0 | Comfortable |
Speeds are estimates for a single request — one conversation at a time — calculated from memory bandwidth, model size and quantisation. Real throughput varies with the inference runtime and its version. Figures published by hardware vendors measure many simultaneous requests and are much higher.
On record
A800 PCIe 40 GB full specification
Everything on record for this board, ordered by how much it bears on running a language model rather than by how a spec sheet would list it. Memory comes first because it decides the outcome; the rest is context.
Memory
The two specifications that decide what this card can run and how quickly. Capacity sets which models fit; bandwidth sets how many tokens per second they produce once they do.
- Memory size
- 40 GB
- Memory bandwidth
- 1,560 GB/s
- Memory type
- HBM2e
- Memory bus width
- 5,120 bit
- Memory clock
- 1.22 GHz
The chip
Which processor is on the board and how it was manufactured. A smaller process size generally means more performance for the same power.
- Graphics processor
- GA100
- Architecture
- Ampere
- Generation
- Server Ampere(Axx)
- Foundry
- TSMC
- Process size
- 7 nm
- Transistors
- 54.2 billion
- Transistor density
- 65,600 K/mm²
- Die size
- 826 mm²
- Package
- BGA-2743
- Released
- 8 November 2022
Clock speeds
How fast the processor runs. Worth far less here than on a gaming benchmark: generating text is limited by memory bandwidth, so a higher clock barely moves the result.
- Base clock
- 765 MHz
- Boost clock
- 1.41 GHz
Processing units
What the chip contains. These drive graphics performance and matter mainly for processing a long prompt rather than for producing the answer.
- Shading units
- 6,912
- Texture mapping units
- 432
- Render output units
- 160
- Streaming multiprocessors
- 108
- Tensor cores
- 432
- L1 cache
- 192 KB
- L2 cache
- 40 MB
Theoretical performance
Peak arithmetic rates published for the board. These are ceilings that no real workload reaches, and generating text reaches a small fraction of them because it is limited by memory rather than arithmetic.
- Half precision (FP16)
- 78 TFLOPS
- Single precision (FP32)
- 19.5 TFLOPS
- Double precision (FP64)
- 9.7 TFLOPS
- Pixel rate
- 226 GPixel/s
- Texture rate
- 609 GTexel/s
The board
What it takes to physically install and power the card — the practical constraints that decide whether it fits the machine you already own.
- Power draw (TDP)
- 250 W
- Suggested power supply
- 600 W
- Power connectors
- 8-pin EPS
- Bus interface
- PCIe 4.0 x16
- Slot width
- Dual-slot
- Dimensions
- 267 mm
Software support
Which graphics and compute interfaces the card supports. CUDA compute capability is the one that bears on inference: below 7.0 there are no tensor cores, and modern inference software falls back to slower code paths.
- CUDA compute capability
- 8.0
- OpenCL
- 3.0
Listings
Where to buy a A800 PCIe 40 GB
No vendor is currently listing this card. Listings come from vendors who publish them here directly — browse the vendor directory to see who is selling what.
What the numbers mean
Memory: the specification that decides everything
Memory
40 GB
Bandwidth
1,560 GB/s
Largest model
Qwen3-Coder-Next
The A800 PCIe 40 GB carries 40 GB of HBM2e, which covers the mid-sized models most people actually run — about 36 GB of it after the runtime and driver reserve their working space.
Bandwidth is 1,560 GB/s across a 5,120-bit bus. Generating a token means reading every weight once, so that figure sets the pace more than any other number here, and at this level text arrives faster than most people read.
The figure is the memory clock — 1.22 GHz here — multiplied by the bus width. It is why core counts predict generation speed so poorly.
The biggest thing it holds is Qwen3-Coder-Next (80B) at Q3_K_M compression, for about 124 tokens per second.
The chip and how it was built
The A800 PCIe 40 GB is built on the GA100 graphics processor, using NVIDIA's Ampere architecture, as part of the Server Ampere(Axx) generation.
The chip is manufactured by TSMC, on a 7 nm process, with a die measuring 826 mm², holding 54.2 billion transistors. A smaller process generally means more performance for the same power, though for language models it matters far less than the memory subsystem.
It was released in November 2022, roughly 3 years ago. Inference software support tends to follow hardware by a year or two, so a card of this age generally has mature, well-optimised code paths available to it.
Compute throughput, and why it matters less than it looks
FP16
78 TFLOPS
FP64
9.7 TFLOPS
Tensor cores
432
On paper the A800 PCIe 40 GB reaches 78 TFLOPS at half precision and 19.5 TFLOPS at single precision. These are peak figures no real workload sustains, and generating text reaches only a small fraction of them — decoding is limited by memory rather than arithmetic, which is why a card can look enormously powerful here and still produce tokens at an ordinary rate.
Double-precision throughput is 9.7 TFLOPS. It has no bearing on running a language model — no inference runtime uses it — but it separates datacentre parts from consumer ones, since the latter deliberately restrict it.
The card carries 432 tensor cores across 108 streaming multiprocessors. These accelerate the matrix arithmetic at the heart of a transformer, and they are what make prompt processing — reading a long document before answering — dramatically faster than it would otherwise be.
Clocks run from 765 MHz at base to 1.41 GHz boosted. Worth far less here than on a gaming benchmark: raising the clock speeds up the arithmetic, and the arithmetic is not what generation is waiting on.
Cache and processing units
The A800 PCIe 40 GB has 192 KB of L1 cache, backed by 40 MB of L2. Cache absorbs a share of the memory traffic that would otherwise hit the main bus, which is the one place on this page where a number other than bandwidth quietly affects generation speed — a large L2 lets more of the working set stay close to the cores.
There are 6,912 shading units, 432 texture mapping units, and 160 render output units. These drive graphics workloads and contribute to prompt processing, but they sit idle for much of the time a model spends generating a reply.
Power, size and installation
Power draw
250 W
The A800 PCIe 40 GB is rated at 250 W, with a 600 W power supply suggested for the whole system. Running a language model keeps a card busy in bursts rather than continuously — it draws hard while generating and idles between requests — so sustained draw over a working day is usually well below the rated figure.
The board occupies a dual-slot, measuring 267 mm long, and needs 8-pin EPS. Worth checking against the case and power supply already in the machine, since the largest cards need considerably more of both than a typical desktop provides.
It connects over PCIe 4.0 x16. The interface governs how quickly a model is loaded from disk into the card, not how fast it runs once there, so a narrower link costs a few seconds at startup and nothing thereafter.
The extremes
The largest AI models a A800 PCIe 40 GB can run
The biggest open-weight models that fit on this card, newest first. Each is shown at the best compression the card can hold.
The fastest AI models on a A800 PCIe 40 GB
Where this card produces tokens quickest. Smaller models dominate here, because generating each token means reading the whole model out of memory once.
Step by step
How to work out the tokens per second of a A800 PCIe 40 GB
You do not have to calculate anything by hand — the gputps.com calculator on this page has already worked it out for every model this card can hold. Reading off the answer takes six steps.
-
01
Start with the model, not the specification
Every one of the 573 models this A800 PCIe 40 GB runs is in the table above. Search narrows it by name or by size.
-
02
Decide how long your conversations run
Drag the slider to the conversation length you plan to work at. The cache grows with the conversation, and on 40 GB it is often what pushes a large model over the edge.
-
03
Choose how far you will compress
By default the table picks the least-compressed copy that fits. Setting a floor removes models that only qualify through heavy compression.
-
04
Look at the range, not just the number
The figures are calculated, not measured. 661 tok/s on Gemma 3 QAT 1B is the fastest result on this card, and like every row it carries a range that reflects how much the runtime matters.
-
05
Check the headroom before you decide
The fit column separates models that just fit from those with room to spare — worth checking against the card's 40 GB before settling on one.
-
06
Cross-check against other hardware
Following a model through to its own page lists all the hardware that can run it, so you can see where the A800 PCIe 40 GB sits against the alternatives.
Answers
A800 PCIe 40 GB — common questions
Can a A800 PCIe 40 GB run a 30B model?
Yes. For example a A800 PCIe 40 GB runs Qwen3-Omni-30B-A3B at Q6_K, using about 28.2 GB of memory and generating around 151 tokens per second.
Can a A800 PCIe 40 GB run a 70B model?
Yes. For example a A800 PCIe 40 GB runs Qwen3-Coder-Next at Q3_K_M, using about 34.1 GB of memory and generating around 124 tokens per second.
How much memory does a A800 PCIe 40 GB have?
A A800 PCIe 40 GB has 40 GB of HBM2e memory. Around a tenth of that is reserved by the inference runtime and the driver, leaving roughly 36 GB available for a model and its conversation.
What is the memory bandwidth of a A800 PCIe 40 GB?
The A800 PCIe 40 GB has 1,560 GB/s of memory bandwidth, across a 5,120-bit memory bus. This is the single best predictor of how fast it generates text, because producing each token means reading the entire model out of memory once.
What type of memory does a A800 PCIe 40 GB use?
It uses HBM2e clocked at 1.22 GHz. HBM types are found on datacentre accelerators and carry far more bandwidth than the GDDR used on desktop cards, which is why they generate tokens considerably faster at the same capacity.
Who makes the A800 PCIe 40 GB?
The A800 PCIe 40 GB is a NVIDIA product, with the chip manufactured by TSMC, on a 7 nm process.
When was the A800 PCIe 40 GB released?
The A800 PCIe 40 GB was released in November 2022.
How much power does a A800 PCIe 40 GB use?
The A800 PCIe 40 GB has a rated board power of 250 W, and a 600 W system power supply is suggested. Generating text draws hard in bursts and idles between requests, so average consumption over a working session is normally well below the rated figure.
How much cache does a A800 PCIe 40 GB have?
The A800 PCIe 40 GB has 192 KB of L1 cache, and 40 MB of L2 cache. Cache absorbs part of the memory traffic that would otherwise reach the main bus, so a larger L2 gives a modest lift to generation speed beyond what bandwidth alone predicts.
What are the TFLOPS of a A800 PCIe 40 GB?
The A800 PCIe 40 GB is rated at 78 TFLOPS at half precision and 19.5 TFLOPS at single precision. These are peak arithmetic ceilings rather than achievable rates, and text generation reaches only a small fraction of them because it is limited by memory bandwidth instead.
How many tensor cores does a A800 PCIe 40 GB have?
The A800 PCIe 40 GB has 432 tensor cores across 108 streaming multiprocessors. They accelerate the matrix arithmetic a transformer is built from, which mainly speeds up processing a long prompt rather than producing the reply.
Does the A800 PCIe 40 GB support CUDA?
Yes. The A800 PCIe 40 GB reports CUDA compute capability 8.0. Capability 7.0 and above has tensor cores, which modern inference software uses; below that it falls back to slower code paths for quantised models.
What bus interface does the A800 PCIe 40 GB use?
It uses PCIe 4.0 x16. This governs how fast a model is loaded onto the card rather than how fast it runs once loaded, so it costs a few seconds at startup and nothing during generation.
Is the A800 PCIe 40 GB good for running local AI models?
Its memory comfortably covers the mid-sized models most people run locally and its bandwidth is high enough to generate text faster than most people read. In total it runs 573 of the models we track. Whether that is enough depends entirely on which model you want — the table above answers that directly.
Can a A800 PCIe 40 GB run a model that does not fit in its memory?
It can be split, with the overflow held in system memory — but that part drags the whole thing down, and none of the 40 GB figures on this page assume it.
Would two A800 PCIe 40 GB cards be twice as fast?
No. A second A800 PCIe 40 GB doubles the memory to 80 GB, which lets you hold models neither could hold alone, but generation does not split that way. These figures describe one card.
What AI models can a A800 PCIe 40 GB run?
573 of the 679 open-weight language models we track fit on a A800 PCIe 40 GB and can be run locally on it. The table on this page lists every one, with the memory it needs, the quantisation it runs at and an estimated generation speed.
What is the largest AI model a A800 PCIe 40 GB can run?
The largest model in our catalogue that fits on a A800 PCIe 40 GB is Qwen3-Coder-Next at 80B parameters, compressed to Q3_K_M. It generates roughly 124 tokens per second and needs about 34.1 GB of the card's memory.
How many tokens per second does a A800 PCIe 40 GB produce?
It depends on the model. On a A800 PCIe 40 GB the fastest model we track is Gemma 3 QAT 1B at about 661 tokens per second, while larger models run proportionally slower because each token requires reading the whole model out of memory once. Speeds are estimates for a single conversation at a time.
Can a A800 PCIe 40 GB run a 7B model?
Yes. For example a A800 PCIe 40 GB runs Multi-Token Prediction 7B at Q8_0, using about 7.9 GB of memory and generating around 98.6 tokens per second.
Can a A800 PCIe 40 GB run a 13B model?
Yes. For example a A800 PCIe 40 GB runs DeepSeekMoE-16B at Q8_0, using about 17.5 GB of memory and generating around 229 tokens per second.
The other direction
Looking at it from the other side?
This page starts from the hardware. If you already know which model you want and need to know what it takes to run it, start from the model instead.