Radeon RX 580 vs Radeon RX 6600: 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 better3
Compute units 8 more36 CU vs 28 CU
Memory bus 128 bit more256 bit vs 128 bit
Memory bandwidth 32 GB/s more256 GB/s vs 224 GB/s
Where Radeon RX 6600 is better2
Memory speed 6 Gbps more14 Gbps vs 8 Gbps
Board power 53 W lower132 W (TBP) vs 185 W (TBP)
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 6600936.7 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 6600
936.7 samples/min · community measurement, sample 81 · November 14, 2026
Blender Open Data (Blender Foundation)
Median of 81 submissions (8 outliers excluded), interquartile range 900.93–959.42; submissions 2025-07-20 to 2026-05-23; 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 (16)
| Benchmark | A | B | Difference |
|---|---|---|---|
| Blender Benchmark 4.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,020.4 | no pair |
| Blender Benchmark 5.1.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 785.7 | no pair |
| Blender Benchmark 5.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 874.1 | no pair |
| Blender Benchmark 3.0.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 850.5 | no pair |
| Blender Benchmark 3.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 809.8 | no pair |
| Blender Benchmark 3.2.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 969.6 | no pair |
| Blender Benchmark 3.3.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 891.1 | no pair |
| Blender Benchmark 3.4.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,012.8 | no pair |
| Blender Benchmark 3.5.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,035 | no pair |
| Blender Benchmark 3.6.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,022.6 | no pair |
| Blender Benchmark 4.0.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 975.1 | no pair |
| Blender Benchmark 4.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,051.5 | no pair |
| Blender Benchmark 4.3.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,022.6 | no pair |
| Blender Benchmark 4.4.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 951.1 | no pair |
| Blender Benchmark 5.0.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 901.9 | no pair |
| Blender Benchmark 5.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 825.6 | 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 6600 | 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 | 28 CU | A: 8 more |
| Shader unitsShader unit counts are comparable only within one architecture. | 2,304 (Stream processors) | 1,792 (Stream processors) | not directly comparable |
| Clocks | |||
| Base clock | 1,257 MHz | no data | no data for B |
| Game Clock (AMD) | no data | 2,044 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 | 2,491 MHz | B: 1,151 MHz more |
| Memory | |||
| Video memory | 8 GB | 8 GB | equal |
| Memory type | GDDR5 | GDDR6 | differs |
| Memory bus | 256 bit | 128 bit | A: 128 bit more |
| Memory speed | 8 Gbps | 14 Gbps | B: 6 Gbps more |
| Memory bandwidthExcludes cache (Infinity Cache / L2), which affects effective bandwidth differently. | 256 GB/s | 224 GB/s | A: 32 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) | 132 W (TBP) | A: 53 W higher |
| Recommended PSU | 500 W | 450 W | A: 50 W higher |
| Power connectors (reference) | no data | 1x 8-pin | no data for A |
Chip
Architecture
AGCN 4
BRDNA 2
differsCompute units
A36 CU
B28 CU
A: 8 moreSM (NVIDIA), CU (AMD) and Xe-core (Intel) are different units and are not compared numerically across vendors.
Shader units
A2,304 (Stream processors)
B1,792 (Stream processors)
not directly comparableShader unit counts are comparable only within one architecture.
Clocks
Base clock
A1,257 MHz
Bno data
no data for BGame Clock (AMD)
Ano data
B2,044 MHz
no data for ABoost clock
A1,340 MHz
B2,491 MHz
B: 1,151 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
B8 GB
equalMemory type
AGDDR5
BGDDR6
differsMemory bus
A256 bit
B128 bit
A: 128 bit moreMemory speed
A8 Gbps
B14 Gbps
B: 6 Gbps moreMemory bandwidth
A256 GB/s
B224 GB/s
A: 32 GB/s moreExcludes cache (Infinity Cache / L2), which affects effective bandwidth differently.
Power and dimensions
Board power
A185 W (TBP)
B132 W (TBP)
A: 53 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
B450 W
A: 50 W higherPower connectors (reference)
Ano data
B1x 8-pin
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).
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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 6600 have?
AMD Radeon RX 580: 8 GB GDDR5, 256-bit bus. AMD Radeon RX 6600: 8 GB GDDR6, 128-bit bus.
What power supply does the manufacturer recommend?
For AMD Radeon RX 580, 500 W or more; for AMD Radeon RX 6600, 450 W or more. This is a recommendation for a typical system; also check the power connectors of the specific card model.
See also
- ModelAMD Radeon RX 580
- ModelAMD Radeon RX 6600
- ComparisonGeForce RTX 3060 vs Radeon RX 6600
- ComparisonGeForce RTX 3050 vs Radeon RX 6600
- ComparisonGeForce RTX 4060 vs Radeon RX 6600
- ComparisonGeForce GTX 1060 vs Radeon RX 580
- ComparisonGeForce GTX 1660 vs Radeon RX 580
- ComparisonGeForce GTX 1650 vs Radeon RX 580
- ComparisonGeForce RTX 2060 vs Radeon RX 580
Data sources (3)
- AMD — specifications of AMD Radeon RX 580, specifications of AMD Radeon RX 6600checked 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 3.2.1, 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 5.1.0checked November 14, 2026
- Wikipedia (English) — release date and launch pricechecked November 14, 2026
How we compare: methodology. Where the data comes from: sources.