ATI Radeon HD 2950 XTX vs ATI Radeon HD 3870 Mac Edition

What is the difference between ATI Radeon HD 2950 XTX and ATI Radeon HD 3870 Mac Edition. Find out which graphics card has better performance.

Graphics Processor (GPU)

RV670GPU NameRV670
RV670 XTX
(215-0708004)
Model numberRV670 XT
(215-0708005)
TeraScaleArchitectureTeraScale
TSMCFoundryTSMC
55 nmProcess Size55 nm
666 millionTransistors666 million
192 mm²Die Size192 mm²

Graphics Card

Never ReleasedRelease DateJun 12th, 2008
Radeon R600
(HD 2900)
FamilyRadeon R600
(HD 3800)
End-of-lifeProductionEnd-of-life
Radeon R500 PCIePredecessorRadeon R500 PCIe
PCIe 2.0 x16Bus InterfacePCIe 2.0 x16

Memory

512 MBMemory Size512 MB
GDDR4Memory TypeGDDR4
256 bitMemory Bus256 bit
72.06 GB/sBandwidth72.06 GB/s

Performance

12.43 GPixel/sPixel fillrate12.43 GPixel/s
12.43 GTexel/sTexture fillrate12.43 GTexel/s
497.3 GFLOPSFP32 (float) performance497.3 GFLOPS
99.46 GFLOPS (1:5)FP64 (double) performance99.46 GFLOPS (1:5)

Clock Speeds

1126 MHz
2.3 Gbps effective
Memory Clock1126 MHz
2.3 Gbps effective
777 MHzGPU Clock777 MHz

Render Config

320Shading Units320
16TMUs16
16ROPs16
4Compute Units4
256 KBL2 Cache256 KB

Board Design

Single-slotSlot WidthSingle-slot
241 mm
9.5 inches
Length241 mm
9.5 inches
110 WThermal design power (TDP)106 W
300 WSuggested PSU300 W
2x DVI
1x S-Video
Display Connectors2x DVI
1x S-Video
1x 6-pinPower Connectors1x 6-pin

API support

10.1 (10_1)DirectX10.1 (10_1)
3.3 (full)
4.0 (partial)
OpenGL3.3 (full)
4.0 (partial)
N/AOpenCLN/A
N/AVulkanN/A
4.1Shader Model4.1