GUNNIR Arc A770 PHOTON OC W 8 GB
The GUNNIR Arc A770 PHOTON OC W 8 GB is GUNNIR’s version of the Intel Arc A770 8GB. At 300 mm it’s 20 mm longer than the 280 mm reference design. It uses 2 8-pin rather than the reference 1 6-pin, 1 8-pin. Below you’ll find every current retailer price and the full spec sheet.
Prices update regularly and may differ at the retailer. This page contains affiliate links.
Gaming performance
Gaming score: geometric mean of in-game FPS, normalized so the RTX 5090 = 100. Render and synthetic scores are in the Benchmarks section below.
Gaming scores are normalised performance indexes derived from Tom’s Hardware’s published GPU benchmarks. Performance per dollar and per watt are our own calculations on top of that data.
1080p Gaming
1440p Gaming
4K Gaming
The Intel Arc A770 8GB scores 31.5 at 1080p, 22.1 at 1440p, and 16.9 at 4K on a scale where 100 = the fastest GPU we test (RTX 5090). These scores apply to all board versions of this chip.
Benchmarks
Standardized benchmark scores for this chip, each compared to the fastest card we track and linked to its source. They apply to every board version.
3D & gaming
Compute & AI
Where to buy
Every in-stock retailer we track, cheapest first.
- AmazonCHEAPEST$369.00In stockUpdated 2026-09-25
| Retailer | Price | Availability | Updated | Buy |
|---|---|---|---|---|
| AmazonCHEAPEST | $369.00 | In Stock | 2026-09-25 | |
Specifications
GPU chip
- Chip
- Intel Arc A770 8GB
- Architecture
- Alchemist ACM-G10
- Process node
- TSMC N6
- Shader cores
- 4,096
- SM count
- 32
- Texture units (TMUs)
- 256
- Render outputs (ROPs)
- 128
- RT cores
- 32 · 1st gen
- Tensor / AI cores
- 512 · 1st gen
Memory
- VRAM
- 8GB GDDR6
- Memory bus
- 256-bit
- Bandwidth
- 512 GB/s
- Memory speed
- 16 Gbps
- L2 cache
- 16 MB
GPU die
- Foundry
- TSMC
- Die size
- 406 mm²
- Transistors
- 21.7 billion
- Generation
- Arc A-series
Display & connectivity
- Max resolution
- 7680 × 4320
- Max displays
- 4
- HDCP
- 2.3
APIs & software
- DirectX
- 12 Ultimate (12.2)
- Vulkan
- 1.3
- OpenGL
- 4.6
- OpenCL
- 3.0
- Shader model
- 6.7
Platform features
- Upscaling
- XeSS 2, XeSS 2 Frame Generation
- Also runs
- FSR 3, FSR 3 Frame Generation
- Resizable BAR
- Yes
Video encoding & decoding
| Codec | Encode | Decode |
|---|---|---|
| H.264 / AVC | Supported | Supported |
| H.265 / HEVC | Supported | Supported |
| AV1 | Supported | Supported |
| VP9 | Not supported | Supported |
Encoder: Xe Media Engine · Decoder: Xe Media Engine
Board
- Base clock
- 2100 MHz
- TDP
- 225W
- Recommended PSU
- 650W
- Power connectors
- Reference design:
1 6-pin, 1 8-pinThis card: 2 8-pin
Physical
- Cooling
- Air
- Length
- Reference design:
280 mmThis card: 300 mm - Slot width
- 2 slots
- Outputs
- 1 HDMI 2.1, 3 Displayport 2.0
Identifiers
- MPN
- A770 Photon 8G OC W
- ASIN
- B0DF7PC2MV
Chip-level specs — cores, memory, die, APIs, media engine and platform features — are shared by every version of the Intel Arc A770 8GB. The Board, Physical and Identifier boxes are specific to this GUNNIR variant; a struck-through value shows where it differs from the reference design.
Across generations
Where the Intel Arc A770 8GB sits in GUNNIR’s lineup — the generation before and after.
Other versions of the Intel Arc A770 8GB
Same GPU, different board, picked by what buyers usually compare.
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