RADEON

AMD Radeon HD 7770 GHz Edition

AMD graphics card specifications and benchmark scores

1 GB
VRAM
MHz Boost
80W
TDP
128
Bus Width

AMD Radeon HD 7770 GHz Edition Specifications

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Radeon HD 7770 GHz Edition GPU Core

Shader units and compute resources

The AMD Radeon HD 7770 GHz Edition GPU core specifications define its raw processing power for graphics and compute workloads. Shading units (also called CUDA cores, stream processors, or execution units depending on manufacturer) handle the parallel calculations required for rendering. TMUs (Texture Mapping Units) process texture data, while ROPs (Render Output Units) handle final pixel output. Higher shader counts generally translate to better GPU benchmark performance, especially in demanding games and 3D applications.

Shading Units
640
Shaders
640
TMUs
40
ROPs
16
Compute Units
10
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HD 7770 GHz Edition Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the Radeon HD 7770 GHz Edition's performance in GPU benchmarks and real-world gaming. The base clock represents the minimum guaranteed frequency, while the boost clock indicates peak performance under optimal thermal conditions. Memory clock speed affects texture loading and frame buffer operations. The Radeon HD 7770 GHz Edition by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

GPU Clock
1000 MHz
Memory Clock
1125 MHz 4.5 Gbps effective
GDDR GDDR 6X 6X

AMD's Radeon HD 7770 GHz Edition Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Radeon HD 7770 GHz Edition's memory capacity determines how well it handles high-resolution textures and multiple displays. Memory bandwidth, measured in GB/s, affects how quickly data moves between the GPU and VRAM. Higher bandwidth improves performance in memory-intensive scenarios like 4K gaming. The memory bus width and type (GDDR6, GDDR6X, HBM) significantly influence overall GPU benchmark scores.

Memory Size
1024 MB
VRAM
1,024 MB
Memory Type
GDDR5
VRAM Type
GDDR5
Memory Bus
128 bit
Bus Width
128-bit
Bandwidth
72.00 GB/s
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Radeon HD 7770 GHz Edition by AMD Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the HD 7770 GHz Edition, reducing the need to fetch data from slower VRAM. L1 and L2 caches store frequently accessed data close to the compute units. AMD's Infinity Cache (L3) dramatically increases effective bandwidth, improving GPU benchmark performance without requiring wider memory buses. Larger cache sizes help maintain high frame rates in memory-bound scenarios and reduce power consumption by minimizing VRAM accesses.

L1 Cache
16 KB (per CU)
L2 Cache
256 KB
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HD 7770 GHz Edition Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the AMD Radeon HD 7770 GHz Edition against other graphics cards. FP32 (single-precision) performance, measured in TFLOPS, indicates compute capability for gaming and general GPU workloads. FP64 (double-precision) matters for scientific computing. Pixel and texture fill rates determine how quickly the GPU can render complex scenes. While real-world GPU benchmark results depend on many factors, these specifications help predict relative performance levels.

FP32 (Float)
1,280.0 GFLOPS
FP64 (Double)
80.00 GFLOPS (1:16)
Pixel Rate
16.00 GPixel/s
Texture Rate
40.00 GTexel/s
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GCN 1.0 Architecture & Process

Manufacturing and design details

The AMD Radeon HD 7770 GHz Edition is built on AMD's GCN 1.0 architecture, which defines how the GPU processes graphics and compute workloads. The manufacturing process node affects power efficiency, thermal characteristics, and maximum clock speeds. Smaller process nodes pack more transistors into the same die area, enabling higher performance per watt. Understanding the architecture helps predict how the HD 7770 GHz Edition will perform in GPU benchmarks compared to previous generations.

Architecture
GCN 1.0
GPU Name
Cape Verde
Process Node
28 nm
Foundry
TSMC
Transistors
1,500 million
Die Size
123 mm²
Density
12.2M / mm²
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AMD's Radeon HD 7770 GHz Edition Power & Thermal

TDP and power requirements

Power specifications for the AMD Radeon HD 7770 GHz Edition determine PSU requirements and thermal management needs. TDP (Thermal Design Power) indicates the heat output under typical loads, guiding cooler selection. Power connector requirements ensure adequate power delivery for stable operation during demanding GPU benchmarks. The suggested PSU wattage accounts for the entire system, not just the graphics card. Efficient power delivery enables the Radeon HD 7770 GHz Edition to maintain boost clocks without throttling.

TDP
80 W
TDP
80W
Power Connectors
1x 6-pin
Suggested PSU
250 W
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Radeon HD 7770 GHz Edition by AMD Physical & Connectivity

Dimensions and outputs

Physical dimensions of the AMD Radeon HD 7770 GHz Edition are critical for case compatibility. Card length, height, and slot width determine whether it fits in your chassis. The PCIe interface version affects bandwidth for communication with the CPU. Display outputs define monitor connectivity options, with modern cards supporting multiple high-resolution displays simultaneously. Verify these specifications against your case and motherboard before purchasing to ensure a proper fit.

Slot Width
Dual-slot
Length
210 mm 8.3 inches
Bus Interface
PCIe 3.0 x16
Display Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Display Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
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AMD API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the AMD Radeon HD 7770 GHz Edition. DirectX 12 Ultimate enables advanced features like ray tracing and variable rate shading. Vulkan provides cross-platform graphics capabilities with low-level hardware access. OpenGL remains important for professional applications and older games. CUDA (NVIDIA) and OpenCL enable GPU compute for video editing, 3D rendering, and scientific applications. Higher API versions unlock newer graphical features in GPU benchmarks and games.

DirectX
12 (11_1)
DirectX
12 (11_1)
OpenGL
4.6
OpenGL
4.6
Vulkan
1.2.170
Vulkan
1.2.170
OpenCL
2.1 (1.2)
Shader Model
6.5 (5.1)
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Radeon HD 7770 GHz Edition Product Information

Release and pricing details

The AMD Radeon HD 7770 GHz Edition is manufactured by AMD as part of their graphics card lineup. Release date and launch pricing provide context for comparing GPU benchmark results with competing products from the same era. Understanding the product lifecycle helps evaluate whether the Radeon HD 7770 GHz Edition by AMD represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.

Manufacturer
AMD
Release Date
Feb 2012
Launch Price
159 USD
Production
End-of-life
Predecessor
Northern Islands
Successor
Sea Islands

Radeon HD 7770 GHz Edition Benchmark Scores

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No benchmark data available for this GPU.

About AMD Radeon HD 7770 GHz Edition

The AMD Radeon HD 7770 GHz Edition (AMD) sits at a launch price of $159 USD, positioning it firmly in the entry‑midrange segment of the 2012 GPU market. At 80 W TDP, its power draw is modest, allowing it to run comfortably in systems with 300‑350 W power supplies without requiring additional cooling solutions. The 1 GB of GDDR5 memory, paired with a 128‑bit bus, delivers bandwidth sufficient for 1080p gaming at medium settings in most titles of its era. When compared to contemporary cards such as the GTX 650, the price‑to‑performance ratio is competitive, especially given AMD’s typically lower MSRP. However, the lack of a bundled display port or HDMI on many reference models may necessitate an adapter, adding a small ancillary cost. Overall, the cost analysis suggests the card provides reasonable value for budget‑conscious builders seeking a balance between price and performance.

In the competitive landscape, the AMD Radeon HD 7770 GHz Edition (AMD) faces direct rivalry from NVIDIA’s GeForce GTX 660 and the older GTX 560 Ti. The GTX 660, while priced slightly higher, offers a larger shader count and higher memory bandwidth, translating to better frame rates in demanding titles. Conversely, the GTX 560 Ti, often found on the secondary market at similar price points, lacks the efficiency gains of the 28 nm process that the Radeon HD 7770 benefits from. AMD’s GCN 1.0 architecture also introduces better compute capabilities for OpenCL workloads, giving the Radeon an edge in non‑gaming applications. Another alternative is the Radeon HD 7850, which shares the same 28 nm node but doubles the VRAM to 2 GB, albeit at a higher price tag. For users focused on legacy DirectX 11 titles, the performance gap between these cards narrows, making the Radeon HD 7770 a viable choice. Ultimately, the decision hinges on whether the buyer prioritizes raw gaming throughput, power efficiency, or specific compute features.

Assessing the investment value of the AMD Radeon HD 7770 GHz Edition (AMD) requires a forward‑looking perspective on driver support and ecosystem longevity. AMD has historically provided extended driver updates for its GCN‑based GPUs, ensuring compatibility with newer APIs such as Vulkan and DirectX 12, albeit with limited performance gains. The card’s 80 W TDP also translates to lower operating costs over time, especially in systems that remain on for extended periods. While the lack of modern features like HDMI 2.0 or DisplayPort 1.2 limits its suitability for 4K displays, it remains perfectly adequate for 1080p or 1440p monitors. Resale value tends to be stable for this generation, as collectors and budget gamers often seek out affordable legacy cards. Therefore, the Radeon HD 7770 presents a modest but sensible investment

The NVIDIA Equivalent of Radeon HD 7770 GHz Edition

Looking for a similar graphics card from NVIDIA? The NVIDIA GeForce RTX 2080 offers comparable performance and features in the NVIDIA lineup.

NVIDIA GeForce RTX 2080

NVIDIA • 8 GB VRAM

View Specs Compare

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