Can I run Gemma 4 31B on an RX 7900 XTX?
Yes. Gemma 4 31B runs on an RX 7900 XTX, about 14 words per second.
Comfortable~14 words/sAbout as fast as you read. Fine for chat.Updated · Gemma 4 31B on every card
How much memory it needs
It uses about 88% of the memory that is free on this card.
What an RX 7900 XTX costs
Radeon RX 7900 XTX 24GB$1,404€1,254used (3-month median)
EU shops · In the US? Switch the currency to USD.US shops · In Europe? Switch the currency to EUR.
Price details
$1,404€1,254
How we priced this
Used price, the typical price over the last three months.
Source: GPU PRIX, checked 17 Oct 2026.
New in stock, €3,972 at GPU PRIX on 17 Oct 2026 (unusually high). Source: GPU PRIX, 17 Oct 2026. More than 1.5 times the typical price of €1,254, so we do not use it as the main price.
€1,254 is the typical price over the past 3 months on GPU PRIX, checked 17 Oct 2026. The only board in stock (an ASUS TUF Gaming at €3,972) cost more than 1.5 times that, and cheaper boards, such as an XFX Speedster at €1,049, were out of stock.
Prices excl. shipping. Euro prices incl. VAT. Dollar prices are converted from our euro prices without EU VAT, before US sales tax.
The cheapest graphics card on our list that also runs it (it still needs the rest of a PC): GeForce RTX 3090 24GB, $1,370€1,224, used (median of sold listings). Fast~27 words/s
The cheapest complete machine that runs it: Mac mini M6 32GB, $1,416€1,530. price unverified Slow~3.1 words/s
Gemma 4 31B on other graphics cards
Runs well6
The whole model fits in the graphics memory.
Doesn't fit3
Not enough graphics memory: it needs about 20.6 GB.
- RTX 3060 12GBhas 12 GB
- RTX 4060 Ti 16GBhas 16 GB
- RTX 5080has 16 GB
More about the model itself, what it is good at and its licence: Gemma 4 31B.
The numbers behind this answer
A model comes in several sizes. Q4 is the standard one most people use; the bigger ones answer a little better but need more memory. Each row adds up the model file, the memory a conversation takes, and some working space, and compares the total with what is free on this card.
Swipe the table sideways to see every column.
| Quality | Conversation | Result | Speed | Model file | Conversation memory | Working space | Total needed | Free memory |
|---|---|---|---|---|---|---|---|---|
| Q4 · standard (smallest that keeps quality) | ~12 pages8,192 tokens | Runs | Comfortable~14 words/s | 18.3 GBmeasured file | 1.5 GB | 0.8 GB | 20.6 GB | 23.4 GB |
| Q5 · a bit sharper, a bit bigger | ~12 pages8,192 tokens | Doesn't fit | — | 22.2 GB | 1.5 GB | 0.8 GB | 24.5 GB | 23.4 GB |
| Q8 · near full quality, almost twice Q4 | ~12 pages8,192 tokens | Doesn't fit | — | 33.5 GB | 1.5 GB | 0.8 GB | 35.8 GB | 23.4 GB |
| FP16 · full quality, over three times Q4 | ~12 pages8,192 tokens | Doesn't fit | — | 62.5 GB | 1.5 GB | 0.8 GB | 64.8 GB | 23.4 GB |
| Q4 · standard, longer conversation | ~49 pages32,768 tokens | Runs | Comfortable~13 words/s | 18.3 GBmeasured file | 3.5 GB | 0.8 GB | 22.6 GB | 23.4 GB |
Questions
- Can I run Gemma 4 31B on an RX 7900 XTX?
- Yes. Gemma 4 31B runs on an RX 7900 XTX, about 14 words per second.
- How much memory does Gemma 4 31B need?
- About 20.6 GB at the standard quality (Q4) for a conversation of up to about 12 pages of text (8,192 tokens), by our estimate: 18.3 GB for the model file (measured), 1.5 GB to hold the conversation and 0.8 GB of working space.
- How fast is Gemma 4 31B on an RX 7900 XTX?
- Comfortable: about 14 words per second (about 19.3 tokens per second). About as fast as you read. Fine for chat. This is our estimate, not a measured test.
Speeds and memory are our estimate from the hardware specs, not a measured test. Prices are dated and may change. How we calculate