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AMD Radeon HD 7970 Duel - ASUS vs. Sapphire
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Test Setup & Specs Comparisons
Test Setup
As usual, the following are the specs of our trusty graphics card test bed system:
- Intel Core i7-975 (3.33GHz)
- Gigabyte GA-EX58-UD4P motherboard
- 3 x 1GB DDR3-1333 G.Skill memory in triple channel mode
- Seagate 7200.10 200GB SATA hard drive
- Windows 7 Ultimate 64-bit
The list of benchmarks used:
- Futuremark 3DMark 11
- Unigine Heaven v2.1
- Battlefield: Bad Company 2
- Crysis Warhead
- Far Cry 2
- Crysis 2
- Batman: Arkham City
- Dirt 3
- S.T.A.L.K.E.R.: Call of Pripyat
We tested both cards at their out-of-the-box settings; as such, the Sapphire Radeon HD 7970 OC is using its default, factory-shipped, BIOS 1 setting, which gives it a GPU core speed of 950MHz (25MHz higher than reference), and 5700MHz memory (200MHz higher than reference). Naturally, setting it at BIOS 2 setting would enable it to rival the ASUS graphics card, but as you'll see in our results on the following pages, the difference between the two cards are rather miniscule to be concerned about and probably not worthwhile the extra heat output and power consumption.
Model | ASUS Radeon HD 7970 DirectCU 2 TOP | Sapphire Radeon HD 7970 OC | AMD Radeon HD 7970 | AMD Radeon HD 7950 | AMD Radeon HD 6970 | NVIDIA GeForce GTX 680 |
---|---|---|---|---|---|---|
Driver | AMD Catalyst 12.3 | AMD Catalyst 12.3 | AMD Catalyst 12.2 Preview Version | AMD Catalyst 12.2 Preview Version | AMD Catalyst 11.11 | ForceWare 300.99 |
Core Code | Tahiti XT | Tahiti XT | Tahiti XT | Tahiti Pro | Cayman XT | GK104 |
Transistor Count | 4300 million | 4300 million | 4300 million | 4300 million | 2640 million | 3540 million |
Manufacturing Process | 28nm | 28nm | 28nm | 28nm | 40nm | 28nm |
Core Clock | 1000MHz | 950MHz | 925MHz | 800MHz | 880MHz | 1006MHz |
VRAM | 3GB GDDR5 | 3GB GDDR5 | 3GB GDDR5 | 3GB GDDR5 | 1GB GDDR5 | 2GB GDDR5 |
Stream Processors | 2048 Stream processing units | 2048 Stream processing units | 2048 Stream processing units | 1792 Stream processing units | 512 Stream processing units | 1536 Stream processing units |
Texture Mapping Units (TMU) or Texture Filtering (TF) units | 128 | 128 | 128 | 112 | 96 | 128 |
Raster Operator units (ROP) | 32 | 32 | 32 | 32 | 32 | 32 |
Memory Clock | 5600MHz GDDR5 | 5700MHz GDDR5 | 5500MHz GDDR5 | 5000MHz GDDR5 | 5500MHz GDDR5 | 6008MHz GDDR5 |
DDR Memory Bus | 384-bit | 384-bit | 384-bit | 384-bit | 256-bit | 256-bit |
Memory Bandwidth | 268.8GB/s | 273.6GB/s | 264GB/s | 240GB/s | 176GB/s | 192.3GB/s |
PCI Express Interface | PCIe ver 3.0 x16 | PCIe ver 3.0 x16 | PCIe ver 3.0 x16 | PCIe ver 3.0 x16 | PCIe ver 2.0 x16 | PCIe ver 3.0 x16 |
Molex Power Connectors | 2 x 8-pin | 1 x 6-pin, 1 x 8-pin | 1 x 6-pin, 1 x 8-pin | 2 x 6-pin | 1 x 6-pin, 1 x 8-pin | 2 x 6-pin |
Multi GPU Technology | CrossFireX | CrossFireX | CrossFireX | CrossFireX | CrossFireX | SLI |
DVI Output Support | 2 x Single-Link or 1 x Dual-Link (switchable) | 1 x Dual-Link | 1 x Dual-Link | 1 x Dual-Link | 2 x Dual-Link | 2 x Dual-Link |
HDMI | 0 | 1 | 1 | 1 | 1 | 1 |
DisplayPort | 4 (version 1.2 HBR2) |
2 (version 1.2 HBR2) |
2 (version 1.2 HBR2) |
2 (version 1.2 HBR2) |
2 (version 1.2) |
2 (version 1.2 HBR2) |
HDCP Output Support | Yes | Yes | Yes | Yes | Yes | Yes |
SRP (USD$) | US$599 | US$470 | US$479 (Launch price: US$549) |
US$399 (Launch price: US$449) |
Launch Price: US$369 | US$499 |
SRP (S$) | S$879 | S$822.83 | S$849 | S$659 | - | S$829 |
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