ATI Radeon X1900 GT vs GeForce GT 750M Mac Edition

Place in the ranking	674	1268
Place by popularity	not in top-100	not in top-100
Power efficiency	5.95	0.35
Architecture	Kepler (2012−2018)	R500 (2005−2007)
GPU code name	GK107	R580
Market segment	Laptop	Desktop
Release date	8 November 2013 (11 years ago)	1 May 2006 (18 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	384	no data
Core clock speed	926 MHz	575 MHz
Number of transistors	1,270 million	384 million
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	50 Watt	75 Watt
Texture fill rate	29.63	6.900
Floating-point processing power	0.7112 TFLOPS	no data
ROPs	16	12
TMUs	32	12

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 3.0 x16	PCIe 1.0 x16
Width	no data	1-slot
Supplementary power connectors	no data	1x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	GDDR3
Maximum RAM amount	2 GB	256 MB
Memory bus width	128 Bit	256 Bit
Memory clock speed	1254 MHz	600 MHz
Memory bandwidth	80.26 GB/s	38.4 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

No outputs

2x DVI, 1x S-Video

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	9.0c (9_3)
Shader Model	5.1	3.0
OpenGL	4.6	2.0
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	3.0	-

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GT 750M Mac Edition 4.34
+1042%

ATI X1900 GT 0.38

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

GT 750M Mac Edition 1673
+1054%

ATI X1900 GT 145

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	4.34	0.38
Recency	8 November 2013	1 May 2006
Maximum RAM amount	2 GB	256 MB
Chip lithography	28 nm	90 nm
Power consumption (TDP)	50 Watt	75 Watt

GT 750M Mac Edition has a 1042.1% higher aggregate performance score, an age advantage of 7 years, a 700% higher maximum VRAM amount, a 221.4% more advanced lithography process, and 50% lower power consumption.

The GeForce GT 750M Mac Edition is our recommended choice as it beats the Radeon X1900 GT in performance tests.

Be aware that GeForce GT 750M Mac Edition is a notebook card while Radeon X1900 GT is a desktop one.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.