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AMD Radeon HD 7870 XT
- Graphics Processor
- Tahiti
- Cores
- 1536
- TMUs
- 96
- ROPs
- 32
- Memory Size
- 2 GB
- Memory Type
- GDDR5
- Bus Width
- 256 bit
GPU
PCB Front
PCB Back
Recommended Gaming Resolutions:
- 1600x900
- 1920x1080
- 2560x1440
The Radeon HD 7870 XT was a performance-segment graphics card by AMD, launched on November 19th, 2012. Built on the 28 nm process, and based on the Tahiti graphics processor, in its Tahiti LE variant, the card supports DirectX 12. Even though it supports DirectX 12, the feature level is only 11_1, which can be problematic with newer DirectX 12 titles. The Tahiti graphics processor is a large chip with a die area of 352 mm² and 4,313 million transistors. Unlike the fully unlocked Radeon HD 7970, which uses the same GPU but has all 2048 shaders enabled, AMD has disabled some shading units on the Radeon HD 7870 XT to reach the product's target shader count. It features 1536 shading units, 96 texture mapping units, and 32 ROPs. AMD has paired 2,048 MB GDDR5 memory with the Radeon HD 7870 XT, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 925 MHz, which can be boosted up to 975 MHz, memory is running at 1500 MHz (6 Gbps effective).
Being a dual-slot card, the AMD Radeon HD 7870 XT draws power from 2x 6-pin power connectors, with power draw rated at 185 W maximum. Display outputs include: 1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2. Radeon HD 7870 XT is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 267 mm in length, and features a dual-slot cooling solution. Its price at launch was 270 US Dollars.
Being a dual-slot card, the AMD Radeon HD 7870 XT draws power from 2x 6-pin power connectors, with power draw rated at 185 W maximum. Display outputs include: 1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2. Radeon HD 7870 XT is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 267 mm in length, and features a dual-slot cooling solution. Its price at launch was 270 US Dollars.
Graphics Processor
Graphics Card
- Release Date
- Nov 19th, 2012
- Generation
-
Southern Islands
(HD 7800)
- Predecessor
- Northern Islands
- Successor
- Sea Islands
- Production
- End-of-life
- Launch Price
- 270 USD
- Bus Interface
- PCIe 3.0 x16
- Reviews
- 95 in our database
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.
Clock Speeds
- Base Clock
- 925 MHz
- Boost Clock
- 975 MHz
- Memory Clock
-
1500 MHz
6 Gbps effective
Memory
- Memory Size
- 2 GB
- Memory Type
- GDDR5
- Memory Bus
- 256 bit
- Bandwidth
- 192.0 GB/s
Render Config
- Shading Units
- 1536
- TMUs
- 96
- ROPs
- 32
- Compute Units
- 24
- L1 Cache
- 16 KB (per CU)
- L2 Cache
- 512 KB
Theoretical Performance
- Pixel Rate
- 31.20 GPixel/s
- Texture Rate
- 93.60 GTexel/s
- FP32 (float)
- 2.995 TFLOPS
- FP64 (double)
- 748.8 GFLOPS (1:4)
Board Design
- Slot Width
- Dual-slot
- Length
- 267 mm
10.5 inches
- TDP
- 185 W
- Suggested PSU
- 450 W
- Outputs
- 1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
- Power Connectors
- 2x 6-pin
- Board Number
- C474
Graphics Features
- DirectX
- 12 (11_1)
- OpenGL
- 4.6
- OpenCL
- 2.1 (1.2)
- Vulkan
- 1.2.170
- Shader Model
- 6.5 (5.1)
Tahiti GPU Notes
| Generation: Southern Islands Desktop Variant: New Zealand / Malta Graphics/Compute: GFX6 (gfx600) Display Core Engine: 6.0 Unified Video Decoder: 3.2 Video Compression Engine: 1.0 CLRX: GCN 1.0 Exact Transistor Count: 4,312,711,873 Latest Drivers: Windows XP / 8: Catalyst Software Suite 14.4 Windows Vista : Catalyst Software Suite 13.12 Windows 7: 32-bit: Radeon Software: Adrenalin Edition 18.9.3 64-bit: AMD Software: Adrenalin Edition 22.6.1 Windows 8.1: 32-bit: Radeon Software: Crimson ReLive Edition 16.12.2 / 17.1.2 64-bit: Radeon Software: Crimson ReLive Edition 17.4.4 / 17.7.1 Windows 10: 32-bit: Radeon Software: Adrenalin Edition 18.9.3 64-bit: AMD Software: Adrenalin Edition 22.6.1 |
Retail boards based on this design (7)
| Name | GPU Clock | Boost Clock | Memory Clock | Other Changes |
|---|---|---|---|---|
| 925 MHz | 975 MHz | 1500 MHz | 268 mm/10.6 inches | |
| 925 MHz | 975 MHz | 1500 MHz | ||
| 925 MHz | 975 MHz | 1500 MHz | ||
| 925 MHz | 975 MHz | 1500 MHz | ||
| 925 MHz | 975 MHz | 1500 MHz | 275 mm/10.8 inches | |
| 925 MHz | 975 MHz | 1500 MHz | ||
| 925 MHz | 1000 MHz | 1250 MHz | 241 mm/9.5 inches |
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