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Sapphire Vapor-X HD 7970 GHz Edition, Sapphire HD 7870 GHz Flex Edition, Sapphire Vapor-X HD 7770 GHz Edition OC, Sapphire HD 7750 Low-Profile Graphics Cards

Four Sapphire graphic adapters in tests.

October 16, 2012



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Sapphire Technology is widely known for making new graphics cards based on GPUs released half a year ago or even before that. As for today, we'll cover another three products based on Radeon HD 7870/7770/7750 and one with a new core—Sapphire HD 7970 GHz Edition.

Sapphire Vapor-X HD 7970 GHz Edition

  • GPU: Radeon HD 7970 GHz Edition (Tahiti)
  • Interface: PCIe 3.0 x16
  • GPU clock rate (ROPs/shaders): 1050–1000 MHz (the standard is 1000–1050 MHz)
  • Memory clock rate, physical (effective): 1500 (6000) MHz (standard)
  • Memory bus: 384-bit
  • Stream processors: 2048
  • Texture units: 128 (BLF/TLF/ANIS)
  • ROP units: 32
  • Dimensions: 275x115 mm, 3 slots
  • PCB color: dark blue
  • Peak power consumption (3D/2D/standby): 225/75/3 W
  • Output connectors: Dual-Link DVI-I, Single-Link DVI-D, HDMI, DisplayPort
  • Multi-GPU mode: Crossfire X (hardware)

Sapphire HD 7870 GHz Flex Edition

  • GPU: Radeon HD 7870 GHz Edition (Pitcairn XT)
  • Interface: PCIe 3.0 x16
  • GPU clock rate (ROPs/shaders): 1000 MHz (standard)
  • Memory clock rate, physical (effective): 1200 (4800) MHz (standard)
  • Memory bus: 256-bit
  • Stream processors: 1280
  • Texture units: 80 (BLF/TLF/ANIS)
  • ROP units: 32
  • Dimensions: 260x113 mm, 2 slots
  • PCB color: dark blue
  • Peak power consumption (3D/2D/standby): 170/52/3 W
  • Output connectors: Dual-Link DVI-I, Single-Link DVI-D, HDMI, DisplayPort
  • Multi-GPU mode: Crossfire X (hardware)

Sapphire Vapor-X HD 7770 GHz Edition OC

  • GPU: Radeon HD 7770 GHz Edition (Cape Verde XT)
  • Interface: PCIe 3.0 x16
  • GPU clock rate (ROPs/shaders): 1100 MHz (the standard is 1000–1100 MHz)
  • Memory clock rate, physical (effective): 1300 (5200) MHz (the standard is 1125 (4500) MHz)
  • Memory bus: 128-bit
  • Stream processors: 640
  • Texture units: 40 (BLF/TLF/ANIS)
  • ROP units: 16
  • Dimensions: 225x110 mm, 2 slots
  • PCB color: dark blue
  • Peak power consumption (3D/2D/standby): 87/42/3 W
  • Output connectors: Dual-Link DVI-I, Dual-Link DVI-D, HDMI, DisplayPort
  • Multi-GPU mode: Crossfire X (hardware)

Sapphire HD 7750 Low Profile

  • GPU: Radeon HD 7750 (Cape Verde Pro)
  • Interface: PCIe 3.0 x16
  • GPU clock rate (ROPs/shaders): 800 MHz (the standard is 800–900 MHz)
  • Memory clock rate, physical (effective): 1125 (4500) MHz (standard)
  • Memory bus: 128-bit
  • Stream processors: 512
  • Texture units: 32 (BLF/TLF/ANIS)
  • ROP units: 16
  • Dimensions: 170x67 mm, 1 slot
  • PCB color: dark blue
  • Peak power consumption (3D/2D/standby): 53/22/3 W
  • Output connectors: Dual-Link DVI-I, miniHDMI, miniDP
  • Multi-GPU mode: Crossfire X (software)

Comparison with the reference design, front view

Sapphire Vapor-X HD 7970 GHz Edition Reference AMD Radeon HD 7970

Sapphire HD 7870 GHz Flex Edition Reference AMD Radeon HD 7870

Sapphire Vapor-X HD 7770 GHz Edition OC Reference AMD Radeon HD 7770

Sapphire HD 7750 Low Profile Reference AMD Radeon HD 7750

Comparison with the reference design, rear view

Sapphire Vapor-X HD 7970 GHz Edition Reference AMD Radeon HD 7970

Sapphire HD 7870 GHz Flex Edition Reference AMD Radeon HD 7870

Sapphire Vapor-X HD 7770 GHz Edition OC Reference AMD Radeon HD 7770

Sapphire HD 7750 Low Profile Reference AMD Radeon HD 7750

The top graphics adapter in our review has an 8-phase GPU VRM managed by the Chil controller, and a 2-phase memory VRM. The memory chips are placed around the GPU, as in the reference card. Also, Sapphire added a second DVI output. Overall, Sapphire Vapor-X HD 7970 GHz Edition's set of outputs allows to connect three displays simultaneously. The graphics card demands supplementary power through 6-pin and 8-pin connectors.

The Sapphire HD 7870 GHz Flex Edition has a shifted 6-phase GPU instead of the reference 5-phase. Again, Sapphire added a DVI output and a full-size DisplayPort instead of two mini versions of the reference device. Being a Flex Edition graphics adapter, Sapphire HD 7870 GHz Flex Edition can handle four, not three displays at the same time. The supplementary power is provided through a pair of 6-pin connectors.

Sapphire Vapor-X HD 7770 GHz Edition OC has the same 3-phase GPU and 1-phase memory VRMs as the reference card. However, the set of outputs doesn't differ from those of the cards above. The graphics card has a 6-pin connector for supplementary power.

Sapphire HD 7750 Low Profile is a completely different product, optimized for slim and barebone cases. Compared to the reference card, it has the same core, memory and VRMs (2-phase for GPU and 1-phase for memory). Due to its size, the adapter has mini, not full-sized HDMI and DisplayPort outputs. The graphics adapter requires no supplementary power.

Maximum resolutions and frequencies:

  • 240 Hz maximum refresh rate
  • 2048 x 1536 @ 85 Hz max. analog (VGA) resolution
  • 2560 x 1600 @ 60 Hz max. digital (DVI) resolution (for Dual Link DVI-D)

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