Radeon RX 6600 vs Radeon RX 6800: specs and benchmark comparison
Short verdict
AMD Radeon RX 6800 leads in every scenario with comparable benchmarks: rendering and compute. This does not imply an advantage in tasks without benchmarks.
Compare with AIRendering and compute
B +100.2%AMD Radeon RX 6800 leads in this scenario (up to 100.2% in comparable benchmarks).
No comparable benchmarks yet: gaming: rasterization, gaming: ray tracing, power efficiency.
Advantages
Only measured and rated values: a noticeable benchmark gap and specs where more is better.
Where Radeon RX 6600 is better2
Board power 118 W lower132 W (TBP) vs 250 W (TBP)
Launch price $250 lower$329 vs $579
Where Radeon RX 6800 is better7
Blender Benchmark 4.5.0 100.2% faster1,875 samples/min vs 937 samples/min
Compute units 32 more60 CU vs 28 CU
Shader units 2,048 more3,840 (Stream processors) vs 1,792 (Stream processors)
Video memory 8 GB more16 GB vs 8 GB
Memory bus 128 bit more256 bit vs 128 bit
Memory speed 2 Gbps more16 Gbps vs 14 Gbps
Memory bandwidth 288 GB/s more512 GB/s vs 224 GB/s
Benchmarks
Results are compared within one benchmark, one version and the same conditions.
- B ahead by 100.2%
Blender Benchmark 4.5.0
GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) · samples/min, higher is better
Radeon RX 6600936.7 samples/minRadeon RX 68001,874.9 samples/minPosition among tested models (13, HIP)
A · 937B · 1,87502,0004,0006,000Each dot is one model’s median in this benchmark. The scale starts at zero, samples/min. AMD Radeon RX 6800 is ahead by 100.2% in this benchmark.
About the measurement and source
- A · 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.
- B · AMD Radeon RX 6800
1,874.9 samples/min · community measurement, sample 30 · November 14, 2026
Blender Open Data (Blender Foundation)
Median of 30 submissions (6 outliers excluded), interquartile range 1847.28–1914.66; submissions 2025-07-21 to 2026-02-24; 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.
Other comparable benchmarks (10)
| Benchmark | A | B | Difference |
|---|---|---|---|
| Blender Benchmark 4.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 1,020.4 | 2,008.8 | B +96.9% |
| Blender Benchmark 3.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 809.8 | 1,474.8 | B +82.1% |
| Blender Benchmark 3.3.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 891.1 | 1,571.4 | B +76.3% |
| Blender Benchmark 3.4.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 1,012.8 | 1,925.3 | B +90.1% |
| Blender Benchmark 3.5.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 1,035 | 1,914.1 | B +84.9% |
| Blender Benchmark 3.6.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 1,022.6 | 1,932.1 | B +88.9% |
| Blender Benchmark 4.0.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 975.1 | 1,903.5 | B +95.2% |
| Blender Benchmark 4.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 1,051.5 | 1,988.3 | B +89.1% |
| Blender Benchmark 4.3.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 1,022.6 | 2,024.5 | B +98% |
| Blender Benchmark 4.4.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 951.1 | 1,847.2 | B +94.2% |
Each benchmark version has its own scale: numbers are compared only within a row.
Reference results (7)
| Benchmark | A | B | Difference |
|---|---|---|---|
| Blender Benchmark 5.1.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 785.7 | 1,664.5 | reference |
| Blender Benchmark 5.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 874.1 | 2,067.3 | reference |
| Blender Benchmark 3.0.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 850.5 | 399.6 | reference |
| Blender Benchmark 3.2.1GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 969.6 | 1,828.7 | reference |
| Blender Benchmark 5.0.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 901.9 | 1,894.4 | reference |
| Blender Benchmark 5.1.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | 825.6 | 2,136.3 | reference |
| Blender Benchmark 3.2.0GPU, sum of scenes monster + junkshop + classroom (OptiX / HIP / oneAPI / Metal) | — | 1,808.9 | no pair |
Each benchmark version has its own scale: numbers are compared only within a row.
Specifications
| Specification | A · Radeon RX 6600 | B · Radeon RX 6800 | Difference |
|---|---|---|---|
| Chip | |||
| Architecture | RDNA 2 | RDNA 2 | equal |
| Compute unitsSM (NVIDIA), CU (AMD) and Xe-core (Intel) are different units and are not compared numerically across vendors. | 28 CU | 60 CU | B: 32 more |
| Shader unitsShader unit counts are comparable only within one architecture. | 1,792 (Stream processors) | 3,840 (Stream processors) | B: 2,048 more |
| Clocks | |||
| Game Clock (AMD) | 2,044 MHz | 1,815 MHz | A: 229 MHz more |
| Boost clockClocks of different architectures do not reflect performance directly. For laptop chips, the clock depends on the laptop’s power limit. | 2,491 MHz | 2,105 MHz | A: 386 MHz more |
| Memory | |||
| Video memory | 8 GB | 16 GB | B: 8 GB more |
| Memory type | GDDR6 | GDDR6 | equal |
| Memory bus | 128 bit | 256 bit | B: 128 bit more |
| Memory speed | 14 Gbps | 16 Gbps | B: 2 Gbps more |
| Memory bandwidthExcludes cache (Infinity Cache / L2), which affects effective bandwidth differently. | 224 GB/s | 512 GB/s | B: 288 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. | 132 W (TBP) | 250 W (TBP) | B: 118 W higher |
| Recommended PSU | 450 W | 650 W | B: 200 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) | 1x 8-pin | 2x 8-pin (reference card) | differs |
Chip
Architecture
ARDNA 2
BRDNA 2
equalCompute units
A28 CU
B60 CU
B: 32 moreSM (NVIDIA), CU (AMD) and Xe-core (Intel) are different units and are not compared numerically across vendors.
Shader units
A1,792 (Stream processors)
B3,840 (Stream processors)
B: 2,048 moreShader unit counts are comparable only within one architecture.
Clocks
Game Clock (AMD)
A2,044 MHz
B1,815 MHz
A: 229 MHz moreBoost clock
A2,491 MHz
B2,105 MHz
A: 386 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
B16 GB
B: 8 GB moreMemory type
AGDDR6
BGDDR6
equalMemory bus
A128 bit
B256 bit
B: 128 bit moreMemory speed
A14 Gbps
B16 Gbps
B: 2 Gbps moreMemory bandwidth
A224 GB/s
B512 GB/s
B: 288 GB/s moreExcludes cache (Infinity Cache / L2), which affects effective bandwidth differently.
Power and dimensions
Board power
A132 W (TBP)
B250 W (TBP)
B: 118 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
A450 W
B650 W
B: 200 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)
A1x 8-pin
B2x 8-pin (reference card)
differs
“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 6600 and AMD Radeon RX 6800 have?
AMD Radeon RX 6600: 8 GB GDDR6, 128-bit bus. AMD Radeon RX 6800: 16 GB GDDR6, 256-bit bus.
What power supply does the manufacturer recommend?
For AMD Radeon RX 6600, 450 W or more; for AMD Radeon RX 6800, 650 W or more. This is a recommendation for a typical system; also check the power connectors of the specific card model.
Which is faster: AMD Radeon RX 6600 or AMD Radeon RX 6800?
AMD Radeon RX 6800 leads in every scenario with comparable benchmarks: rendering and compute. This does not imply an advantage in tasks without benchmarks.
See also
Data sources (3)
- AMD — specifications of AMD Radeon RX 6600, specifications of AMD Radeon RX 6800checked 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 3.2.0, 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.