RTX 5070 vs RTX 4070 Super — the 12GB mid-range decision

RTX 5070 vs RTX 4070 Super: which 12GB card to buy used?

Hardware advice reviewed 2026-10-04 · asking-price samples checked for freshness · Methodology

Verdict: Both cards have 12GB. Choose using current price, supported software and benchmarks for your workload. A newer generation does not add memory capacity, and identical capacity does not imply identical inference speed.

	RTX 5070	RTX 4070 Super
Historical editorial estimate	$625 ($525–$750)	$480 ($300–$700)
eBay median (filtered)	—	—
Memory	12GB VRAM	12GB VRAM
$ / GB (sample median)	Unavailable	Unavailable
Power	250W TDP	220W TDP
Launch MSRP	$549	$599

Fair values are historical editorial estimates, not current offers; eBay medians are filtered Buy-It-Now samples, not checkout prices. See how we compute these.

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Verify model fit before buying

Memory capacity alone cannot tell you which models run. Check the artifact, runtime, context and concurrency, including cache and working buffers. Mac memory is shared with the operating system. See our memory sizing guide.

We have not benchmarked these configurations. Hardware advice reviewed 2026-10-04. Check the sources below for supported hardware and software requirements.

Check software versions

Confirm that the driver and runtime support the exact architecture and quantization. Hardware features matter only when the application uses them.

When to buy more memory

If the model, context and working buffers exceed usable memory, compare larger-capacity cards or supported offloading. There is no universal guarantee that every 14B model fits in 12GB.

Sources and review

FAQ

How do I know whether my model will fit?

Check the exact artifact, runtime, context and concurrency. Allow for cache and working memory; installed capacity alone is not a fit test.

Which is the better value today?

First confirm that the hardware supports your workload. Then compare dated asking-price samples, condition, checkout cost and any required system upgrades. Historical editorial fair values are not current offers.

Also consider

Model	Memory	Fair value	eBay median
RTX 5070 Ti	16GB	$925	—
RTX 4070	12GB	$525	—