Radeon RX 580 vs Radeon RX 6700 XT: specs and benchmark comparison
Short verdict
Not enough data for a performance conclusion: the database has no comparable benchmarks for this pair. Below are the key differences in official specifications.
Compare with AIAdvantages
Only measured and rated values: a noticeable benchmark gap and specs where more is better.
Where Radeon RX 580 is better2
Memory bus 64 bit more256 bit vs 192 bit
Board power 45 W lower185 W (TBP) vs 230 W (TBP)
Where Radeon RX 6700 XT is better4
Compute units 4 more40 CU vs 36 CU
Video memory 4 GB more12 GB vs 8 GB
Memory speed 8 Gbps more16 Gbps vs 8 Gbps
Memory bandwidth 128 GB/s more384 GB/s vs 256 GB/s
Benchmarks
Results are compared within one benchmark, one version and the same conditions.
Blender Benchmark 4.5.0
GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) · samples/min, higher is better
Radeon RX 580no dataRadeon RX 6700 XT1,474.8 samples/minNo advantage conclusion: no comparable result for the first model.
About the measurement and source
- A · AMD Radeon RX 580
- no comparable result
- B · AMD Radeon RX 6700 XT
1,474.8 samples/min · community measurement, sample 78 · November 14, 2026
Blender Open Data (Blender Foundation)
Median of 78 submissions (7 outliers excluded), interquartile range 1434.95–1506.09; submissions 2025-07-18 to 2026-03-03; HIP backend. Snapshot 2026-11-14.
difference = |A − B| ÷ the smaller value × 100%. The 5% noticeable threshold is a UX heuristic, not statistical significance.
Cycles render in Blender Benchmark. Median of the sum of samples per minute over three scenes after removing outliers.
Reference results (19)
| Benchmark | A | B | Difference |
|---|---|---|---|
| Blender Benchmark 4.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,609.4 | no pair |
| Blender Benchmark 5.1.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,753.4 | no pair |
| Blender Benchmark 5.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,645.9 | no pair |
| Blender Benchmark 3.0.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,359.5 | no pair |
| Blender Benchmark 3.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,227.6 | no pair |
| Blender Benchmark 3.1.2GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,392.3 | no pair |
| Blender Benchmark 3.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,457.8 | no pair |
| Blender Benchmark 3.2.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,465.6 | no pair |
| Blender Benchmark 3.3.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,307.3 | no pair |
| Blender Benchmark 3.4.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,539.7 | no pair |
| Blender Benchmark 3.5.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,534.4 | no pair |
| Blender Benchmark 3.6.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,570.3 | no pair |
| Blender Benchmark 4.0.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,521.4 | no pair |
| Blender Benchmark 4.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,643.7 | no pair |
| Blender Benchmark 4.3.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,597.8 | no pair |
| Blender Benchmark 4.4.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,467 | no pair |
| Blender Benchmark 5.0.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,345.6 | no pair |
| Blender Benchmark 5.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,738.2 | no pair |
| Blender Benchmark 5.3.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,629.7 | no pair |
Each benchmark version has its own scale: numbers are compared only within a row.
Specifications
| Specification | A · Radeon RX 580 | B · Radeon RX 6700 XT | Difference |
|---|---|---|---|
| Chip | |||
| Architecture | GCN 4 | RDNA 2 | differs |
| Compute unitsSM (NVIDIA), CU (AMD) and Xe-core (Intel) are different units and are not compared numerically across vendors. | 36 CU | 40 CU | B: 4 more |
| Shader unitsShader unit counts are comparable only within one architecture. | 2,304 (Stream processors) | 2,560 (Stream processors) | not directly comparable |
| Clocks | |||
| Base clock | 1,257 MHz | 2,321 MHz | B: 1,064 MHz more |
| Game Clock (AMD) | no data | 2,424 MHz | no data for A |
| Boost clockClocks of different architectures do not reflect performance directly. For laptop chips, the clock depends on the laptop’s power limit. | 1,340 MHz | 2,581 MHz | B: 1,241 MHz more |
| Memory | |||
| Video memory | 8 GB | 12 GB | B: 4 GB more |
| Memory type | GDDR5 | GDDR6 | differs |
| Memory bus | 256 bit | 192 bit | A: 64 bit more |
| Memory speed | 8 Gbps | 16 Gbps | B: 8 Gbps more |
| Memory bandwidthExcludes cache (Infinity Cache / L2), which affects effective bandwidth differently. | 256 GB/s | 384 GB/s | B: 128 GB/s more |
| Power and dimensions | |||
| Board powerTGP (NVIDIA) and TBP (AMD/Intel) are calculated differently; higher is not better. For laptops, the chip maker sets the range and the laptop maker picks the value, so the same chip behaves differently in different laptops. | 185 W (TBP) | 230 W (TBP) | B: 45 W higher |
| Recommended PSU | 500 W | 650 W | B: 150 W higher |
| Length (reference / Founders Edition)Partner cards have different dimensions; check the specific SKU. | no data | 267 mm | no data for A |
| Thickness (slots) | no data | 2 | no data for A |
| Power connectors (reference) | no data | 1x 8-pin + 1x 6-pin (reference card) | no data for A |
Chip
Architecture
AGCN 4
BRDNA 2
differsCompute units
A36 CU
B40 CU
B: 4 moreSM (NVIDIA), CU (AMD) and Xe-core (Intel) are different units and are not compared numerically across vendors.
Shader units
A2,304 (Stream processors)
B2,560 (Stream processors)
not directly comparableShader unit counts are comparable only within one architecture.
Clocks
Base clock
A1,257 MHz
B2,321 MHz
B: 1,064 MHz moreGame Clock (AMD)
Ano data
B2,424 MHz
no data for ABoost clock
A1,340 MHz
B2,581 MHz
B: 1,241 MHz moreClocks of different architectures do not reflect performance directly. For laptop chips, the clock depends on the laptop’s power limit.
Memory
Video memory
A8 GB
B12 GB
B: 4 GB moreMemory type
AGDDR5
BGDDR6
differsMemory bus
A256 bit
B192 bit
A: 64 bit moreMemory speed
A8 Gbps
B16 Gbps
B: 8 Gbps moreMemory bandwidth
A256 GB/s
B384 GB/s
B: 128 GB/s moreExcludes cache (Infinity Cache / L2), which affects effective bandwidth differently.
Power and dimensions
Board power
A185 W (TBP)
B230 W (TBP)
B: 45 W higherTGP (NVIDIA) and TBP (AMD/Intel) are calculated differently; higher is not better. For laptops, the chip maker sets the range and the laptop maker picks the value, so the same chip behaves differently in different laptops.
Recommended PSU
A500 W
B650 W
B: 150 W higherLength (reference / Founders Edition)
Ano data
B267 mm
no data for APartner cards have different dimensions; check the specific SKU.
Thickness (slots)
Ano data
B2
no data for APower connectors (reference)
Ano data
B1x 8-pin + 1x 6-pin (reference card)
no data for A
“More” does not always mean “better”: higher power draw or size is a system requirement, not an advantage (such bars are dimmed).
Compare with AI
An AI model reviews the specs and benchmarks of this pair and gives a plain-language verdict on who each model suits.
Questions and answers
How much video memory do AMD Radeon RX 580 and AMD Radeon RX 6700 XT have?
AMD Radeon RX 580: 8 GB GDDR5, 256-bit bus. AMD Radeon RX 6700 XT: 12 GB GDDR6, 192-bit bus.
What power supply does the manufacturer recommend?
For AMD Radeon RX 580, 500 W or more; for AMD Radeon RX 6700 XT, 650 W or more. This is a recommendation for a typical system; also check the power connectors of the specific card model.
See also
Data sources (3)
- AMD — specifications of AMD Radeon RX 580, specifications of AMD Radeon RX 6700 XTchecked November 7, 2026
- Blender Open Data (Blender Foundation) — benchmark Blender Benchmark 4.2.0, benchmark Blender Benchmark 4.5.0, benchmark Blender Benchmark 5.1.1, benchmark Blender Benchmark 5.2.0, benchmark Blender Benchmark 3.0.1, benchmark Blender Benchmark 3.1.0, benchmark Blender Benchmark 3.1.2, benchmark Blender Benchmark 3.2.0, benchmark Blender Benchmark 3.2.1, benchmark Blender Benchmark 3.3.0, benchmark Blender Benchmark 3.4.0, benchmark Blender Benchmark 3.5.0, benchmark Blender Benchmark 3.6.0, benchmark Blender Benchmark 4.0.0, benchmark Blender Benchmark 4.1.0, benchmark Blender Benchmark 4.3.0, benchmark Blender Benchmark 4.4.0, benchmark Blender Benchmark 5.0.0, benchmark Blender Benchmark 5.1.0, benchmark Blender Benchmark 5.3.0checked November 14, 2026
- Wikipedia (English) — release date and launch pricechecked November 14, 2026
How we compare: methodology. Where the data comes from: sources.